JP6042927B2 - Mixer generator - Google Patents

Description

  The present invention relates to a mixture generating apparatus that automatically mixes a mixture raw material and a high-temperature liquid to generate a mixture. Specifically, the present invention relates to the efficiency of cooling the mixture to be generated and the reduction of the bubble content.

  In recent years, WHO (World Health Organization) and FAO (Food and Agriculture Organization of the United Nations) "Guidelines on Safe Formulation, Storage and Handling of Dry Powdered Milk for Infants" Was co-created.

  According to this guideline, there is a report on the relationship between infant dry milk powder, that is, infant formula, and severe illness and death of infants due to infection with Enterobacter Sakazaki, etc.

As a preventive measure against the above infection, it has been reported that dry powdered milk given to infants must be prepared using boiling water at a temperature of 70 ° C. or higher. As specific milk preparation methods, the guidelines describe the following methods.
(1) Clean and disinfect the surface where dry powdered milk (milk powder) is prepared.
(2) Wash fingers with soap and clean water and wipe off moisture with a clean cloth or disposable napkin.
(3) Boil a sufficient amount of safe water.
(4) Be careful of burns and pour an appropriate amount of boiled water cooled to above 70 ° C into a clean and sterilized cup or baby bottle.
(5) Accurately add the indicated amount of dry powdered milk.
(6) Cool in a short time to a temperature suitable for breastfeeding by placing it under running tap water or leaving it in a container containing cold or ice water.
(7) Wipe the outside of the feeding cup or bottle with a clean cloth or disposable cloth, the type of dry powdered milk, the name or identification number of the infant, the date and time of milk preparation, the name of the staff who prepared the milk, etc. Display the necessary information.
(8) Since very hot water is used for formulating, it is essential to check the feeding temperature before breast feeding so as not to burn the infant's mouth.
(9) Discard any dry powdered milk that has not been consumed within 2 hours of preparation.

  Here, the temperature of milk given to the infant is considered to be about 40 ° C., which is the human skin temperature, in consideration of the temperature and body temperature of breast milk. For this reason, in order to prepare dry powdered milk and give it to infants, it is necessary to cool the milk to about 40 ° C. after preparing using a liquid once boiled at 70 ° C. or higher. .

  As conventional apparatuses and methods for preparing infant milk, for example, milk preparation apparatuses disclosed in Patent Document 1 and Patent Document 2 are known.

  The milk preparation pot heating device 100 disclosed in Patent Document 1 is a device for making hot water for milk preparation. As shown in FIGS. 21A and 21B, the case 101 and the case 101 are adjusted. And a hot plate 102 on which the milk pot 120 is placed. The hot plate 102 is supported by a cooling fan 103 provided in the case 101. When the milk preparation pot 120 is placed on the hot plate 102 and the milk adjustment pot 120 is heated by the hot plate 102, boiling water is generated from the water in the milk preparation pot 120. The cooling fan 103 is rotated, and the milk preparation pot 120 is cooled by the air flowing from the air intake port 104.

  Next, in the milk preparation apparatus disclosed in Patent Document 2, a concentrate is prepared by mixing an amount of formula milk necessary for the total amount of the mixture with a certain amount of warm water. And it is comprised so that the milk of a suitable temperature may be adjusted by adding the liquid of low temperature so that the final volume of a mixture may be reached with respect to the concentrate.

JP 2005-110937 A (published April 28, 2005) Special table 2010-524550 gazette (July 22, 2010 publication)

  However, the conventional mixture generating apparatus has the following problems.

  First, a milk preparation pot heating device 100 disclosed in Patent Document 1 cools a hot plate 102 in a case 101 provided below a milk preparation pot 120 by a cooling fan 103. For this reason, the heat dissipation path of the internal hot water in the milk preparation pot 120 is only the heat transfer to the hot plate 102, and it takes time for cooling. The milk preparation pot heating apparatus 100 is intended to cool boiling water to 55 ° C., and is not suitable for cooling milk prepared at 70 ° C. or higher to 40 ° C. for drinking.

  Next, the milk preparation apparatus disclosed in Patent Document 2 can automatically perform a series of operations from production of milk to cooling, but it is necessary to dilute the concentrate. For this reason, the stirring and mixing process for mixing warm water and cooling water is required. However, in order to prevent the dry powder milk from remaining undissolved, it is necessary to prepare a concentrate using a large amount of high-temperature water. Therefore, in order to adjust the milk after the preparation to a constant temperature and a constant amount, it is necessary to use cooling water at room temperature or lower, and it is necessary to provide a cooling device in the milk preparation device. In order to lower the temperature of the cooling water and keep it constant by the cooling device, it takes a long time before it becomes possible to start milk preparation from power ON. In addition, there is a problem in terms of cost, for example, it is necessary to provide a cooling device, a cooling water sterilizing device, and the like. Furthermore, the milk preparation method is different from the safe milk preparation method according to “Guidelines for Safe Formulation, Storage and Handling of Infant Dry Powdered Milk” in that cooling water is additionally mixed.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a mixture generating apparatus capable of shortening the cooling time when the mixture preparation unit is cooled in the cooling unit. It is in.

  In order to solve the above-described problem, the mixture generation apparatus according to one aspect of the present invention adds a liquid heating unit that heats the supplied liquid, and a liquid that is heated in the liquid heating unit to the mixture raw material. In a mixture generating apparatus including a mixture preparation unit to be prepared, a rotation mechanism that rotates and mixes the mixture raw material and liquid inside the mixture preparation unit, and sends the mixture preparation unit by blowing air to the mixture preparation unit. A cooling unit for cooling, a temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit, and a control unit for controlling the rotation mechanism are provided, and the control unit is configured by the temperature measuring device. The rotation of the rotation mechanism is changed in accordance with the detected temperature of the mixture.

  According to one aspect of the present invention, when the mixture preparation unit is cooled by the cooling unit, there is an effect of providing a mixture generation device capable of shortening the cooling time.

(A) is sectional drawing which shows the structure of the powdered milk milking apparatus as a mixture production | generation apparatus in Embodiment 1 of this invention, (b) shows the structure of the milking pod of the said powdered milk milking apparatus. It is a top view. It is a schematic sectional drawing which shows the structure of the float type check valve connected to the supply piping of the said powdered milk preparation apparatus. It is sectional drawing which shows the structure of the cooling part of the said powdered milk preparation apparatus. (A) is sectional drawing which shows the liquid level state inside this milk preparation pod in the state which the stirring element of the milk preparation pod in the said powdered milk preparation apparatus has stopped, (b) It is sectional drawing which shows the liquid level state inside the milking pod in the state which is rotating. (A) shows the state of internal heat dissipation and defoaming in a state where the stirring element of the milk preparation pod in the powder milk preparation device is rotating, and the rotation direction of the stirring element and the fan It is sectional drawing which shows the state which the ventilation direction opposes, (b) is sectional drawing which shows the state in which the rotation direction of a stirring element and the ventilation direction of a fan are the same direction. It is a flowchart which shows the control operation | movement of the rotation of a heater and a stirring element by the control part at the time of milk preparation of the said powdered milk preparation apparatus. It is a flowchart which shows the control operation | movement of the rotation of the heater and the stirring element by the control part at the time of milk preparation of the powdered milk preparation apparatus as the mixture production | generation apparatus in Embodiment 2 of this invention. (A) is at the time of milk adjustment in the case where the rotation direction of the stirrer of the milk preparation pod and the air blowing direction of the fan are the same direction in the powdered milk milk preparation device as the mixture production device in Embodiment 3 of the present invention. It is sectional drawing which shows an internal state, Comprising: It is sectional drawing which shows the state of the initial stage of hot water supply, (b) is sectional drawing which shows the state after completion of hot water supply. It is a flowchart which shows the control operation | movement of the heater by the control part at the time of milk preparation of the said powdered milk preparation apparatus, rotation of a stirring element, and a cooling part. (A) shows the state of the inside of the milk adjustment pod at the time of milk preparation in the powdered milk preparation device as the mixture production device in Embodiment 4 of the present invention, and the rotation direction of the stirrer and the blower of the fan It is sectional drawing which shows the state of the initial stage of the hot water supply of the same direction as a direction, (b) is sectional drawing which shows the state after the hot water supply completion with the rotation direction of a stirrer and the ventilation direction of a fan facing each other. . It is a flowchart which shows the control operation | movement of the heater by the control part at the time of milk preparation of the said powdered milk preparation apparatus, rotation of a stirring element, and a cooling part. It is sectional drawing which shows the milking pod periphery of the powdered milk formulating apparatus as a mixture production | generation apparatus in Embodiment 5 of this invention. (A) is sectional drawing which shows the structure of the powdered milk milking apparatus as a mixture production | generation apparatus in Embodiment 6 of this invention, (b) shows the structure of the milking pod of the said powdered milk milking apparatus. It is a top view. It is sectional drawing which shows the structure of the cooling part of the said powdered milk preparation apparatus. (A) is sectional drawing which shows the structure of the powdered milk milking apparatus as a mixture production | generation apparatus in Embodiment 7 of this invention, (b) shows the structure of the milking pod of the said powdered milk milking apparatus. It is a top view. (A) is sectional drawing which shows the structure of the powdered milk milking apparatus as a mixture production | generation apparatus in Embodiment 8 of this invention, (b) shows the structure of the milking pod of the said powdered milk milking apparatus. It is a top view. (A) is sectional drawing which shows the relationship between the ventilation direction in the milk preparation pod and exhaust duct of the powdered milk preparation apparatus in Embodiment 6 of this invention, and the stirring direction in the milk preparation pod. (B) is sectional drawing which shows the relationship between the ventilation direction in the milking pod and exhaust duct of the powdered milk milk preparation apparatus in Embodiment 7 of this invention, and the stirring direction in the milking pod. (C) is sectional drawing which shows the relationship between the ventilation direction in the milking pod and exhaust duct of the powdered milk milk preparation apparatus in Embodiment 8 of this invention, and the stirring direction in the milking pod (D) is sectional drawing which shows the relationship between the ventilation direction in the milking pod of the milk powder preparation apparatus as a comparative example of this invention, and the stirring direction in the milking pod. It is a graph which shows the influence which the rotation speed of the stirring element of the milking pod in the said powdered milk preparation apparatus has on the relationship between the temperature of milk and the elapsed time from the start of hot water supply. It is a graph which shows the influence which it has on the relationship between the temperature of milk and the elapsed time from the hot-water supply start whether the rotation direction of the stirring element and the ventilation direction of a fan in the said powdered milk preparation apparatus are the same. It is a graph which shows the influence which the structure of the cooling unit in the said powdered milk preparation apparatus has on the relationship between the temperature of milk and the elapsed time from the start of hot water supply. (A) (b) is sectional drawing which shows the structure of the conventional mixture production | generation apparatus.

[Embodiment 1]
An embodiment of the present invention will be described below with reference to FIGS.

  In this embodiment, as a mixture generation device, for example, a milk dispenser that automatically mixes infant formula as a raw material for mixing and a heated liquid to generate milk as a mixture will be described. In addition, although this embodiment demonstrates the powdered milk preparation apparatus as a mixture production | generation apparatus, in the mixture production | generation apparatus of this invention, it does not necessarily restrict to this. For example, the present invention can be applied to a coffee maker as a mixture generating apparatus that automatically generates coffee as a mixture by pouring a heated liquid into ground coffee beans as a raw material for mixed extraction. In addition, it can be applied to a tea maker as a mixture generating device that automatically generates Japanese tea or black tea as a mixture by pouring a heated liquid into tea leaves as a raw material for mixed extraction.

  The structure of 1 A of powdered milk preparation apparatuses as a mixture production | generation apparatus of this Embodiment is demonstrated based on Fig.1 (a) (b)-FIG. (A) of FIG. 1 is sectional drawing which shows the structure of the powdered milk preparation apparatus 1A of this Embodiment. FIG. 1B is a plan view showing the configuration of the milk adjustment pod 4 of the powdered milk preparation device 1A. FIG. 2 is a schematic cross-sectional view showing a configuration of the float type check valve 11 connected to the supply pipe 10 of the powdered milk preparation device 1A. FIG. 3 is a cross-sectional view showing the configuration of the cooling unit 30 of the powdered milk preparation device 1A.

  As shown in FIGS. 1A and 1B, the powdered milk preparation device 1A of the present embodiment includes an apparatus main body 2 as a housing, a container 3 for storing liquid, and a preparation as a mixture preparation unit. It is composed of a milk pod 4.

  The container 3 is disposed on the upper part of the apparatus main body 2 as a casing and is detachable from the apparatus main body 2. The container 3 stores a liquid L for use in milk preparation. Examples of the liquid L include tap water, water suitable for babies such as drinking water for babies, pure water, and natural water. Moreover, the water supply valve 3a is provided in the lower part of the container 3, and when it removes from a main body, the water supply valve 3a closes. For this reason, the container 3 can be removed from the apparatus main body 2 and supplied with water from the water supply, and can be carried after the water supply. Thereafter, when the container 3 is installed in the apparatus main body 2, the water supply valve 3 a is opened, and the liquid L is supplied to the supply pipe 10 and the heater 12.

  Here, a scale is attached to the side surface of the container 3 so that the amount of water can be grasped, and the user can adjust the amount of milk preparation using this scale. The scale may be attached to the inner side surface of the container 3, or the container 3 may be transparent so that it can be confirmed from the outside.

  In addition, for example, a filter made of activated carbon or an ion exchange membrane (not shown) is installed in the container 3 so that impurities such as impurities, chlorine, bacteria, bacteria, and ionic metals in the poured liquid L can be removed. It is good also as composition to do. Further, assuming that the liquid L is stored for a long time, for example, a sterilization device such as an ultraviolet irradiation device may be installed on the upper portion of the container 3. Thereby, the stored liquid L can be irradiated with ultraviolet rays and sterilized.

  The milk preparation pod 4 can be placed on the placement portion 2a near the center of the apparatus main body 2, and in this milk preparation pod 4, preparation and mixing of hot water and powdered milk PM as a beverage ingredient are performed. Generation work is performed.

  Below the milk preparation pod 4 in the apparatus main body 2, an operation panel 6 is provided for the user to operate the powdered milk preparation apparatus 1A. The operation panel 6 is connected to a control unit 7 that controls the operation of each unit of the apparatus main body 2.

  Inside the apparatus main body 2, a supply pipe 10 for supplying the liquid L stored in the container 3 and a heater 12 as a liquid heating unit, which will be described later, are provided on the outlet side of the supply pipe 10. A funnel 20 as a funnel-shaped container that is a temperature adjusting unit for adjusting the boiling liquid L to a temperature between 70 ° C. and a cooling unit 30 for cooling the milk preparation pod 4, and a milk preparation pod 4 A motor 5 for rotating the stirring bar 4a and a thermistor TM for measuring the temperature of the milk M in the milk preparation pod 4 are provided.

  The supply pipe 10 is a flow path through which the liquid L stored in the container 3 passes. The supply pipe 10 is heated with a float type check valve 11 for preventing the liquid L from flowing back into the container 3, a heater 12 as a heating supply unit for heating and sterilizing the supplied liquid L by boiling, A watering nozzle 13 that disperses the liquid L in the funnel 20 and ejects the liquid L is provided. For this reason, the liquid L stored in the container 3 flows from the container 3 into the inlet of the heater 12 via the float check valve 11 inside the supply pipe 10, and from the outlet of the heater 12, a water spray nozzle 13 is discharged.

  As the material of the supply pipe 10, for example, a metal pipe such as SUS, or a pipe such as silicon or Teflon (registered trademark) resin pipe can be used. Preferably, it is desirable to select, for example, a silicon-based member suitable for supply for food use. In the present embodiment, as the supply pipe 10, for example, a silicon tube having an inner diameter of φ10 mm is used. The size of the material and inner diameter of the tube can be arbitrarily set. Moreover, the connection with each part can select the arbitrary fixing methods suitable for the size etc. of the tube.

  The float check valve 11 has a function of preventing the backflow of the liquid L from the heater 12 to the container 3 and a function of stopping the supply of the liquid L at the water level of the float check valve 11. As a specific configuration, as shown in FIG. 2, a large-diameter pipe portion 11b having a large inner diameter is provided under a small-diameter pipe portion 11a having a small inner diameter, and the small-diameter pipe portion 11a is included in the large-diameter pipe portion 11b. A float 11c having an outer shape larger than the inner diameter is provided.

  In the float type check valve 11, when the liquid L is injected from the container 3, the float 11 c is lowered by the flow. When the liquid L is filled up to the water level of the float check valve 11, the float 11c floats and closes the small-diameter pipe portion 11a, so that the backflow from the supply pipe 10 to the container 3 is prevented.

In the present embodiment, as shown in FIG. 1A, the heater 12 has, for example, a U-shaped pipe shape, and is formed so as to cover a part of the supply pipe 10 from the periphery. For example, a nichrome wire is incorporated in the heater 12, and has a function of heating and boiling the liquid L for milk production, sterilizing it, and supplying it to the watering nozzle 13. Specifically, it is as follows.
(1) The liquid L flows from the container 3 through the float check valve 11 into the portion of the supply pipe 10 covered with the U-shaped heater 12.
(2) The liquid L that has flowed into the portion of the supply pipe 10 covered with the U-shaped heater 12 is filled with the liquid L up to a height at which the float check valve 11 is attached.
(3) When heating by the heater 12 is started, the liquid L boils and is pushed up from the heater 12 by its vapor pressure.
(4) Since the float type check valve 11 is provided on the inlet side of the heater 12, the liquid L is pushed out only from the outlet of the heater 12 on the reverse side, and the liquid L is supplied to the watering nozzle 13 via the supply pipe 10. Is done.
(5) As the liquid L in the supply pipe 10 in the portion covered by the heater 12 decreases, the pressure in the supply pipe 10 in the portion covered by the heater 12 decreases, and the float check valve 11 opens. . As a result, returning to (1), the liquid L before heating flows in.

  The heater 12 of the present embodiment is provided with a temperature sensor (not shown) so that the heating temperature of the heater 12 can always be measured.

  The above (1) to (5) are repeated until the liquid L disappears from the container 3, and the liquid L heated by the heater 12 is sequentially pumped to the funnel 20. When the liquid L disappears inside the supply pipe 10, the heat from the heater 12 becomes difficult to be transmitted to the outside, and the temperature of the heater 12 itself is likely to rise above the boiling temperature of the liquid L. As a result, the heating of the heater 12 can be stopped by setting and detecting the upper limit temperature.

  The watering nozzle 13 has a function of dispersing and ejecting the liquid L that has been heated and pumped. A plurality of small holes and thin slits are formed on the lower wall surface which is the tip of the watering nozzle 13. Then, by changing the size of the holes and slits, the liquid L can be dispersed from a shower shape to a finer mist shape. When the liquid L is finely dispersed, the surface area increases, and heat exchange with air existing in the space of the funnel 20 is promoted. As a result, the temperature of the liquid L falls.

  The funnel 20 collects the liquid L, which has been dispersed by the watering nozzle 13 and has a temperature drop, and drops the liquid L from the outlet provided in the lower part to the milking pod 4 provided below. The outlet provided in the lower part may have a diameter of about 1 mm to 3 mm and a number of holes of about 1 to 5, for example. In this embodiment, five holes having an inner diameter of φ1 mm are provided as outlets provided in the lower part.

  Therefore, the watering nozzle 13 and the funnel 20 function as a first temperature adjusting unit that cools the liquid L heated and boiled by the heater 12.

  Below the funnel 20, the milk adjustment pod 4 is placed on the placement portion 2 a of the apparatus main body 2. The milk preparation pod 4 generates milk M by preparing and mixing dry powdered milk, that is, powdered milk PM, which has been previously set inside, and a boiled liquid L for milk production.

  In the milk adjustment pod 4 of the present embodiment, a stirring bar 4 a for stirring and mixing the powdered milk PM and the liquid L is provided inside the milk adjustment pod 4.

  The stirrer 4a has a magnet arranged therein, and has a form in which the surface of the magnet is covered with resin. As the resin used for the surface, it is preferable to use a resin suitable for food. For example, it is desirable to use silicon, Teflon (registered trademark), polypropylene, or the like similar to the material of the supply pipe 10 described above.

  As the shape of the stirrer 4a, various shapes such as an elongated bowl shape, an octagonal rod shape, a disk shape, and a windmill blade shape can be used. In the present embodiment, an elongate bowl is used.

  The magnet of the stirring bar 4a is paired with a magnet (not shown) arranged on the rotation shaft of the motor 5 arranged inside the apparatus main body 2 below the milk adjustment pod 4 and corresponds to the operation of the motor 5. Thus, the stirring bar 4a rotates.

  The motor 5 includes the magnet as described above, and the magnet rotates as the motor 5 rotates. The stirring bar 4a is rotated by the rotation of the magnet. That is, the motor 5 has a function of rotating the stirring bar 4a. Therefore, the stirring bar 4a and the motor 5 have a function as the rotation mechanism of the present invention.

  The motor 5 of the present embodiment is controlled independently of the operation of dropping the liquid L onto the milk preparation pod 4 in the operation of the powdered milk preparation device 1A. That is, the motor 5 may move or may stop when the liquid L is dropped. In addition, the rotation direction and rotation speed of the motor 5 are variable, and are controlled by the control unit 7 in a timely manner when the milk M is generated, as will be described later. Thereby, the rotation direction and rotation speed of the stirring bar 4a are controlled through the control of the motor 5.

  Here, it is preferable that a current detection circuit is provided in the power supply system to the motor 5. When the milk M is generated without the stirrer 4a being installed, or when the stirrer 4a is displaced from the magnet of the motor 5 due to some abnormality, the load on the motor 5 decreases. By detecting this decrease in load by the current detection circuit, it is possible to detect an abnormality in the operation of the powdered milk preparation device 1A.

  As shown in FIG. 3, the cooling unit 30 includes a fan 32 for air blowing, an air inlet 31, a duct 33 including an air duct 33 a and an air exhaust duct 33 b, and an air outlet 34. It functions as a second temperature control unit for cooling the milk M afterwards.

  The fan 32 has a blowing function for air-cooling the milk M in the milk adjustment pod 4 to a target temperature. As shown in FIG. 3, the fan 32 is disposed inside the apparatus main body 2, an intake port 31 for sucking air is provided on the upstream side, and air flow for blowing air to the milk adjustment pod 4 on the downstream side. A duct 33a is provided. The intake port 31 is provided with a filter (not shown) so that dust, foreign matter and the like do not enter inside. Further, an exhaust duct 33 b having an exhaust port 34 for discharging air to the outside of the apparatus main body 2 is provided on the downstream side of the milk adjustment pod 4.

  That is, the duct 33 has a space portion 33c in the middle of the air duct 33a and the exhaust duct 33b, and the milk adjustment pod 4 is arranged in the space portion 33c. Since the space 33c is an open space, the milk adjustment pod 4 can be inserted.

  The air duct 33a is opened so that the wind hits the milk conditioning pod 4 from the side or from below, and the exhaust duct 33b on the downstream side of the milk conditioning pod 4 is located next to the milk conditioning pod 4 or It is arranged so as to escape from above and is connected to the exhaust port 34.

  In the present embodiment, the exhaust duct 33b downstream of the milk conditioning pod 4 in the duct 33 is steam generated from the heated liquid L or milk milk M that is poured into the milk conditioning pod 4. It is easy to condense. Therefore, as shown in FIG. 3, the fan 32 is disposed upstream of the milk adjustment pod 4, and the condensed water drops are prevented so that water droplets condensed inside the exhaust duct 33 b do not fall into the milk adjustment pod 4. It is set as the structure which provided the duct return part 33d as a part. That is, the duct return portion 33d is formed by folding the inlet end portion of the cylindrical exhaust duct 33b inward, and water droplets condensed inside the exhaust duct 33b are stored in the duct return portion 33d. .

  In the cooling unit 30 of the present embodiment, such a configuration allows air to flow above the opening 4 b on the upper side of the milk adjustment pod 4, and hot air is drawn from the inside of the milk adjustment pod 4. It becomes easy to come off. As a result, heat dissipation from the milk M by convection is promoted. On the contrary, when the air blowing is stopped, the space in the milk adjustment pod 4 becomes a heat reservoir, so that it is difficult to release heat from the milk M.

  Here, when the wind is directly applied to the milk M present in the milk preparation pod 4, it can be quickly cooled. However, if the wind is directly applied to the milk M, there is a high possibility that foreign matters such as dust will enter the milk M. When dust or the like touches the milk M, it is trapped and taken in the milk M by surface tension. For this reason, it is very inappropriate as a method of making a drink for a baby. Therefore, in the present embodiment, the above-described milk M is configured not to be directly exposed to wind. That is, the cooling of the milk is realized by two heat dissipations, the heat dissipation from the side surface of the milk adjustment pod 4 and the heat dissipation by removing the heat reservoir in the upper part of the milk adjustment pod 4.

  In addition, the cooling process by the fan 32 is easier to cool by performing simultaneously with the stirring process by the stirring bar 4a. This principle will be described with reference to FIGS. (A) of FIG. 4 is sectional drawing which shows the liquid level state inside the pod 4 for milk preparation in the state which the stirring element 4a has stopped. FIG. 4B is a cross-sectional view showing the liquid level inside the milk preparation pod 4 in a state where the stirring bar 4a is rotating.

  As shown to (a) of FIG. 4, the liquid level state inside the milk preparation pod 4 in the state which the stirring element 4a has stopped is horizontal. On the other hand, as shown in FIG. 4B, when the stirrer 4a is rotating, the outer liquid level is raised by the centrifugal force and the central part is lowered. By being in such a state, both the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M increase. For this reason, the heat radiation area of the milk M increases and the milk M becomes easy to cool. Further, since there is such a change in the liquid level, the size of the milk preparation pod 4 needs to be sufficiently larger than the milk preparation amount of the milk M.

  Here, the rotational speed of the stirring bar 4a is increased as much as possible so that the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M are increased as much as possible to cool the milk M more quickly. be able to. However, if the rotation speed is increased, the milk M is likely to be splashed or swelled, and a large amount of bubbles are taken into the milk M. Milk M containing bubbles increases the air that enters the baby's stomach when breastfeeding. As a result, a large belch is likely to come out from the baby, and in a baby whose belp is still not good, the milk M can be easily spit out at the beat. Such spitting back of milk M requires refeeding or frequent feeding of the baby, and greatly increases the burden on the breastfeeding person such as the mother. Therefore, the method for producing milk M containing a large amount of bubbles is very inappropriate as a method for producing milk M to be given to a baby. Therefore, a method for producing a mixture that can reduce the inclusion of bubbles in the milk M is desired.

  Specifically, as a method for reducing the inclusion of bubbles in the milk M, in this embodiment, the cooling process by the cooling unit 30 is performed simultaneously with the stirring process by the stirring bar 4a, and the rotation direction of the stirring bar 4a and the fan The direction of the airflow by 32 ventilation is made to oppose. As a result, the milk M can be more easily cooled and the bubble content can be reduced.

  This principle will be described with reference to FIGS. (A) of FIG. 5 shows the state of internal heat radiation and defoaming in a state where the stirrer 4a of the milk adjustment pod 4 is rotating in the powdered milk preparation apparatus 1A. It is sectional drawing which shows the state (henceforth "countercurrent mixing state") where the rotation direction of 4a and the direction of the airflow by the ventilation of the fan 32 oppose and are mixed. FIG. 5B is a cross-sectional view showing a state in which the rotation direction of the stirrer 4a and the direction of the air flow by the fan 32 are the same (hereinafter referred to as “cocurrent mixing state”).

  That is, as shown in FIG. 5A, in the countercurrent mixing state in the present embodiment, the rotation direction of the stirrer 4a and the direction of the airflow by the fan 32 are opposed to each other. Thereby, the wind speed which hits the liquid level of the milk M under stirring increases to the rotational speed of the stirring bar 4a plus the wind speed of the airflow generated by the fan 32. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 32 is promoted. Further, the air flow slightly generated in the milk preparation pod 4 by the stirring of the milk M and the air flow generated by the fan 32 collide with each other, disturbing the hot air in the milk preparation pod 4 and the milk preparation pod 4. Is sent to above. The hot air sent above the milk conditioning pod 4 joins the air flow generated by the fan 32 and is sent to the exhaust duct 33b in sequence. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between the milk M and air is promoted, and the milk M can be cooled more quickly.

  Moreover, in the countercurrent mixing state in this Embodiment, since the rotation direction of the stirring bar 4a and the direction of the airflow by ventilation of the fan 32 are facing each other, the cocurrent mixing state shown in FIG. In comparison, defoaming of bubbles generated during mixing is promoted. This is because the air flow generated by the fan 32 collides with bubbles on the liquid level of the milk M and exerts pressure on the bubbles, and moving the bubbles causes friction between the bubbles and makes the bubbles easy to flip.

  Therefore, in this Embodiment, the milk M with little bubble content can be produced | generated.

  Next, the thermistor TM shown in FIG. 1A is for indirectly measuring the temperature of the liquid L or milk M in the milk preparation pod 4. By measuring the milk temperature in the milk preparation pod 4 and the temperature measured by the thermistor TM in advance, the finished milk temperature can be set on the user side. Thereby, the completion of milk preparation is determined from the temperature detected by the thermistor TM, and the completion is notified to the user by sound or lamp display.

  Further, the amount of milk can be predicted from the transition of the milk temperature in the milk preparation pod 4, and stirring is performed so that the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M are as large as possible. It is possible to set the rotation speed of the child 4a.

  Here, the thermistor TM confirms the temperature of the internal liquid L or milk M from the temperature of the outer surface of the milk preparation pod 4. Therefore, a leaf spring for bringing the thermistor TM into contact with the milk adjustment pod 4 to ensure heat transfer between the thermistor TM and the milk adjustment pod 4, and the position of the milk adjustment pod 4 and the apparatus main body 2. It is desirable to provide positioning pins and guides for making the relationship constant.

  The finished milk M is transferred to a baby bottle and given to the baby. For this reason, when notifying the user of the completion by sound or lamp display, it is desirable to set the temperature to be detected at a temperature higher than 40 ° C., which is an indication of breast feeding, and as a guide, around 45 ° C.

  The operation of each part when performing milk preparation using the powdered milk preparation device 1A having the above configuration will be described with reference to FIG. FIG. 6 is a flowchart showing the control operation of the rotation of the heater 12 and the stirring bar 4a by the control unit 7 during the milk preparation of the powdered milk preparation device 1A.

  In milk preparation using the powdered milk preparation device 1A, as shown in FIG. 6, first, water of a desired milk preparation amount is supplied to the container 3 (S1). At this time, water may be supplied to the container 3 installed in the apparatus main body 2, or after supplying water to the container 3 removed from the apparatus main body 2, the container 3 may be installed in the apparatus main body 2. .

  Next, the operation panel 6 is operated to start the operation of the powdered milk preparation device 1A. When the operation is started, the control unit 7 that has received a command from the operation panel 6 starts energizing the heater 12, drives the cooling unit 30, and starts the motor 5 to rotate the stirring bar 4 a. Is started (S2). In addition, the direction of the airflow by the ventilation of the fan 32 at this time and the rotation direction of the stirring bar 4a are made to oppose.

  Next, the water in the supply pipe 10 is heated by the heater 12 and boils. Boiling water passes through the supply pipe 10, the watering nozzle 13, and the funnel 20 in this order, and is supplied to the milk preparation pod 4 to start hot water supply (hereinafter referred to as “hot water supply start”) (S3). At this time, the control unit 7 sets the rotation speed of the motor 5, that is, the rotation speed of the stirring bar 4 a to a preset set value A such as 1700 to 1800 rpm. The set value A is not necessarily limited to this. Further, the controller 7 controls the thermistor TM so as to detect the amount of hot water supplied to the milk preparation pod 4 by measuring the temperature change of the milk preparation pod 4, that is, the temperature change of the milk M. The detection of the hot water supply amount based on the temperature transition of the milk M by the thermistor TM will be described later.

  Next, during the hot water supply, the control unit 7 controls the rotational speed of the stirrer 4a to gradually increase from the set value A to a set value B such as 3000 to 4000 rpm as the amount of hot water is increased. (Setting value A <setting value B) (S4). The set value B is not necessarily limited to this. That is, the control unit 7 estimates the amount of hot water supply based on the temperature of the milk M in the milk preparation pod 4 measured by the thermistor TM so that the rotational speed of the stirrer 4a increases as the amount of hot water supply increases. Control.

  Subsequently, when all of the water initially stored in the container 3 is supplied to the milk preparation pod 4 (hereinafter referred to as “end of hot water supply”), the controller 7 stops energization of the heater 12 while stirring. The rotation speed of the child 4a is maintained at the set value B (S5).

  Thereafter, the milk is cooled in a state where the rotation speed of the stirring bar 4a is set to the set value B (S6), and the milk preparation is completed.

  Below, the detection of the amount of hot water supply based on the temperature transition of the milk M by the thermistor TM is demonstrated. First, the following data is measured in advance. That is, the thermistor TM measures the temperature transition of the milk preparation pod 4 when various amounts of water are weighed in the container 3 and the powder milk preparation device 1A is operated. Thereby, the data which show the temperature transition of the milking pod 4 when producing milk of a certain milking quantity are obtained. From this data and the temperature transition measured by the thermistor TM during the operation of the powdered milk preparation device 1A, the amount of milk M at that time can be predicted.

  Therefore, the milk amount can be estimated by measuring the temperature of the milk preparation pod 4 during operation of the powdered milk preparation device 1A with the thermistor TM, and the control unit is based on the estimated milk amount. 7 can control the rotational speed of the stirring bar 4a. At this time, the rotation speed of the stirrer 4a is a range in which the milk M does not overflow outside the milking pod 4 when the liquid level of the milk M in the milking pod 4 is changed by the rotation of the stirring bar 4a. The value can be controlled to be as large as possible.

  When the mixture is generated and cooled in the present embodiment, the milk amount is estimated from the temperature transition of the milk M measured by the thermistor TM, and the rotation speed of the stirrer 4a increases as the milk amount increases. Therefore, the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M can be increased. As a result, the cooling rate of the milk M can be increased.

  Thus, in the powdered milk preparation device 1A of the present embodiment, the heater 12 as a liquid heating unit that heats the supplied liquid L, and the liquid L heated by the heater 12 to the powdered milk PM as the mixture material. And a milk preparation pod 4 as a mixture preparation unit for preparing milk M as a mixture. And the stirring bar 4a as a rotation mechanism that rotates and mixes the milk powder PM and the liquid L inside the milk preparation pod 4 and the air to the milk preparation pod 4 to cool the milk preparation pod 4 A cooling unit 30, a thermistor TM as a temperature measuring device for detecting the temperature of the milk M inside the milk adjustment pod 4, and a control unit 7 for controlling the stirring bar 4 a are provided. The control unit 7 changes the rotation of the stirring bar 4a according to the temperature of the milk M detected by the thermistor TM.

  According to said structure, 1 A of powdered milk formulating apparatuses are for milk preparation which prepares the milk M by adding the liquid L heated with the heater 12 to the powdered milk PM and the heater 12 which heats the supplied liquid L And a pod 4. In this type of powdered milk preparation device 1A, the milk M prepared in the milk preparation pod 4 is hot, so it needs to be cooled to an appropriate temperature.

  In the present embodiment, a cooling unit 30 is provided that blows air to the milk preparation pod 4 to cool the milk preparation pod 4. The pod 4 could not be cooled efficiently.

  Therefore, in the present embodiment, a stirrer 4 a that rotates and mixes the powdered milk PM and the liquid L inside the milk adjustment pod 4 is provided. As a result, in addition to the air blow to the milk preparation pod 4, the milk powder PM and the liquid L inside the milk preparation pod 4 are stirred and mixed by the stirrer 4a. Can be cooled.

  By the way, it has been confirmed by experiments that the rotation by the stirrer 4a cannot be sufficiently quickly cooled, for example, when the rotation is constant from the start of hot water supply to the optimum temperature at the time of drinking.

  Therefore, in the present embodiment, the thermistor TM that detects the temperature of the milk M inside the milk adjustment pod 4 and the control unit 7 that controls the stirrer 4a are provided. The rotation of the stirring bar 4a is changed according to the temperature of the milk M detected by the TM.

  That is, when the liquid L is started to be supplied to the milk preparation pod 4, the temperature of the liquid L is high and the amount of the liquid is small, and therefore the rotation of the stirring bar 4a is preferably low. However, since the temperature of the liquid L further rises as the amount of liquid inside the milk preparation pod 4 gradually increases, it is preferable to rotate the stirrer 4a at high speed.

  Further, by increasing the rotation speed of the stirring bar 4a, the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M can be increased. As a result, the cooling rate of the milk M can be further increased.

  Therefore, when the milk adjustment pod 4 is cooled by the cooling unit 30, the powdered milk preparation device 1 </ b> A that can shorten the cooling time can be provided.

  Further, in the powdered milk preparation device 1A of the present embodiment, the control unit 7 stirs as the amount of the milk M in the milk preparation pod 4 increases with the supply of the liquid L heated by the heater 12. Control is performed so as to increase the rotational speed of 4a, and control is performed so that the rotational speed of the stirrer 4a becomes a first preset rotational speed after the supply of the liquid L to the milk adjustment pod 4 is completed. In addition, control is performed so that the first set rotational speed is maintained until the temperature of the milk M falls below a predetermined value.

  Accordingly, as the amount of the milk M in the milk preparation pod 4 increases, the rotation speed of the stirrer 4a increases, so that the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M are increased. Can be increased, and the cooling rate of the milk M can be increased. Further, in the process of cooling the milk M after the hot water supply is finished, the cooling rate of the milk M can be arbitrarily selected. If it is desired to cool quickly, the first set rotational speed may be set high. If it is desired to cool relatively slowly, the first set rotational speed may be set low.

  Therefore, it is possible to provide the powdered milk preparation device 1A that can efficiently cool the milk M inside the milk adjustment pod 4. Moreover, the cooling speed of the milk M can be adjusted.

  Moreover, in the powdered milk preparation apparatus 1A in the present embodiment, the cooling unit 30 uses the air intake 31 for taking in air, the fan 32 as a blower fan, and the air from the fan 32 as a mixture preparation unit. A blower duct 33 a that leads to the milk adjustment pod 4 and an exhaust duct 33 b that guides the wind passing through the milk adjustment pod 4 to an exhaust port 34 provided above the milk adjustment pod 4 are provided. The control unit 7 controls the rotation direction of the stirrer 4a so that the rotation direction of the stirrer 4a as the rotation mechanism is opposed to the direction of the airflow by the fan 32.

  According to the above configuration, the powdered milk preparation device 1A includes the air inlet 31 that takes in air, the fan 32 as a blower fan, and the air duct 33a that guides the wind from the fan 32 to the milk preparation pod 4. And a cooling unit 30 that includes an exhaust duct 33 b that guides the wind passing through the milk adjustment pod 4 to an exhaust port 34 provided above the milk adjustment pod 4.

  Thereby, in the cooling part 30, air is taken in from the inlet 31 by the fan 32, and is discharged to the pod 4 for milk preparation from the ventilation duct 33a. Thereby, the vapor | steam of the upper part of the pod 4 for milk control is discharged | emitted by the exhaust duct 33b, and is exhausted outside from the exhaust port 34 after that. Therefore, since the steam is immediately discharged to the outside through the exhaust duct 33b, it is possible to cool efficiently.

  Moreover, in the powdered milk preparation apparatus 1A in the present embodiment, the control unit 7 changes the rotation direction of the stirrer 4a so that the rotation direction of the stirrer 4a as the rotation mechanism faces the direction of the air flow by the fan 32. Control.

  Thus, for example, the powdered milk PM and the liquid L in the milk preparation pod 4 are rotated and mixed by a rotating mechanism such as a stirrer including the stirrer 4a and the motor 5 that rotates the stirrer 4a. L can be mixed efficiently.

  Further, since the milk powder PM and the liquid L are rotated by the rotation mechanism, the liquid becomes a vortex during the rotation, and the contact area of the liquid with the inner wall surface of the milk adjustment pod 4 increases. On the other hand, since the ventilation from the cooling unit 30 comes from the side surface or the lower side of the milk preparation pod 4, cooling of the milk preparation pod 4 is promoted. And since the rotation direction by a rotation mechanism and the direction of the airflow by the fan 32 are facing each other, heat exchange between the milk M and the air is promoted, and defoaming of bubbles generated during mixing is promoted. . Therefore, the milk M can be cooled more quickly, and the milk M having a low bubble content can be generated.

  Therefore, a powder milk milking device that can cool the milking pod 4 more efficiently and reduce the bubble content of the produced milk by the synergistic effect of the rotation mechanism of the milking pod 4 and the ventilation from the cooling unit 30. 1A can be provided.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIG. The configurations other than those described in the present embodiment are the same as those in the first embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and explanation thereof is omitted.

  In the powdered milk preparation device 1A of the first embodiment, after the hot water supply is finished, the control unit 7 maintains the rotational speed of the stirrer 4a with a set value B larger than the set value A at the start of hot water supply until the end. M was cooling. On the other hand, in the powdered milk preparation device 1B of the present embodiment, after the end of hot water supply, the set value B larger than the set value A at the start of hot water supply is maintained until a predetermined time, but the predetermined time has elapsed. Thereafter, the rotational speed of the stirring bar 4a is gradually decreased.

  The features of the milk control operation in the control unit 7 of the powdered milk preparation device 1B of the present embodiment will be described below. In addition, since the structure of the powdered milk preparation apparatus 1B of this Embodiment is the same as the powdered milk preparation apparatus 1A of the said Embodiment 1, description of the structure of the powdered milk preparation apparatus 1B is abbreviate | omitted.

  That is, in the powdered milk preparation apparatus 1A of the first embodiment, the control unit 7 sets the rotational speed of the stirrer 4a higher than the set value A at the start of hot water supply after the hot water supply ends. Was maintained until the end to cool the milk M.

  In this case, the larger the rotational speed of the stirring bar 4a during the milk mixing, the easier it is for bubbles to be contained in the finished milk M due to the splashing or undulation of the milk M.

  That is, the rotational speed of the stirrer 4a is increased as much as possible, and the milk M is cooled more quickly by making the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M as large as possible. Can do. However, if the rotation speed of the stirrer 4a is increased, the milk M is likely to be splashed or swelled, and a large amount of bubbles are taken into the milk M. Milk M containing bubbles increases the air that enters the baby's stomach when breastfeeding. As a result, a large belch is likely to come out from the baby, and in a baby whose belp is still not good, the milk M can be easily spit out at the beat. Such spitting back of milk M requires refeeding or frequent feeding of the baby, and greatly increases the burden on the breastfeeding person such as the mother. Therefore, the method for producing milk M containing a large amount of bubbles is very inappropriate as a method for producing milk M to be given to a baby.

  Therefore, in the present embodiment, after the end of hot water supply, the set value B that is larger than the set value A at the start of hot water supply is maintained for a fixed time, but after the fixed time has elapsed, the rotational speed of the stirrer 4a is gradually increased. And finally the rotational speed is reduced to 0 rpm.

  As a result, the splash and undulation of the milk M can be reduced, so that the inclusion of bubbles in the finished milk M can be reduced.

  The operation of each part when performing milk preparation using the powdered milk preparation device 1B of the present embodiment will be described with reference to FIG. FIG. 7 is a flowchart showing the control operation of the rotation of the heater 12 and the stirring bar 4a by the control unit 7 during the milk preparation of the powdered milk preparation device 1B of the present embodiment.

  In milk preparation using the powdered milk preparation device 1B of the present embodiment, as shown in FIG. 7, first, water of a desired milk preparation amount is supplied to the container 3 (S11). At this time, water may be supplied to the container 3 installed in the apparatus main body 2, or after supplying water to the container 3 removed from the apparatus main body 2, the container 3 may be installed in the apparatus main body 2. .

  Next, the operation panel 6 is operated to start the operation of the powdered milk preparation device 1B. When the operation is started, the control unit 7 that has received a command from the operation panel 6 starts energizing the heater 12, drives the cooling unit 30, and starts the motor 5 to rotate the stirring bar 4 a. Is started (S12). In addition, the direction of the airflow by the ventilation of the fan 32 at this time and the rotation direction of the stirring bar 4a are made to oppose.

  Next, the water in the supply pipe 10 is heated by the heater 12 and boils. The boiled water passes in the order of the supply pipe 10, the watering nozzle 13, and the funnel 20, and is supplied to the milk preparation pod 4 to start hot water supply (hereinafter referred to as “hot water supply start”) (S13). At this time, the control unit 7 sets the rotation speed of the motor 5, that is, the rotation speed of the stirring bar 4 a to a preset set value A such as 1700 to 1800 rpm. The set value A is not necessarily limited to this.

  Next, during the hot water supply, the control unit 7 controls the rotational speed of the stirrer 4a to gradually increase from the set value A to a set value B such as 3000 to 4000 rpm as the amount of hot water is increased. (Setting value A <setting value B) (S14). The set value B is not necessarily limited to this. That is, the control unit 7 estimates the amount of hot water supply based on the temperature of the milk M in the milk preparation pod 4 measured by the thermistor TM so that the rotational speed of the stirrer 4a increases as the amount of hot water supply increases. Control.

  Subsequently, when all of the water initially stored in the container 3 is supplied to the milk preparation pod 4 (hereinafter referred to as “end of hot water supply”), the controller 7 stops energization of the heater 12 while stirring. The rotation speed of the child 4a is maintained at the set value B (S15).

  Thereafter, the control unit 7 maintains the set value B from the end of the hot water supply until a predetermined time, but reduces the rotation speed of the stirring bar 4a from the set value B to 0 after the fixed time has elapsed (S16). In this state, the milk is cooled (S17), and the milk preparation is completed.

  Thus, in the powdered milk preparation device 1B of the present embodiment, the control unit 7 keeps the rotation speed of the stirring bar 4a constant for a predetermined time after the supply of the liquid L to the milk preparation pod 4 is completed. After being held, the rotational speed is controlled to gradually decrease.

  Thereby, since the swell and splash during cooling of the produced milk M can be reduced, the content of bubbles can be reduced in the finished milk M. In addition, the lower the rotation speed of the stirring bar 4a, the more difficult the positional deviation between the stirring bar 4a and the magnet of the motor 5 occurs. The milk M can be prevented from spilling out of the milk preparation pod 4.

[Embodiment 3]
The following will describe still another embodiment of the present invention with reference to FIGS. The configurations other than those described in the present embodiment are the same as those in the first embodiment and the second embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiment 1 and Embodiment 2 are given the same reference numerals, and explanation thereof is omitted.

  In the powdered milk preparation device 1A of the first embodiment and the powdered milk preparation device 1B of the second embodiment, the control unit 7 controls the rotational speed of the stirring bar 4a to be relatively large from the initial stage of hot water supply. It was. On the other hand, in the powdered milk preparation device 1C according to the present embodiment, the control unit 7 reduces the rotational speed of the stirring bar 4a in the initial stage of hot water supply in consideration of the mixing of bubbles. The difference is that it is controlled to increase after the hot water supply ends.

  The configuration of the powdered milk preparation device 1C of the present embodiment is the same as that of the powdered milk preparation device 1A of the first embodiment and the powdered milk preparation device 1B of the second embodiment. The description of the configuration of the milk device 1C is omitted.

  The milk M production process in the powdered milk preparation apparatus 1C of the present embodiment and the milk M cooling process by the rotation of the cooling unit 30 and the stirring bar 4a will be described with reference to FIGS. To do. (A) of FIG. 8 shows the internal state at the time of milk preparation in the case where the rotation direction of the stirring bar 4a of the milk preparation pod 4 and the air blowing direction of the fan 32 are the same direction in the powder milk preparation device 1C. FIG. 2 is a cross-sectional view showing an initial stage of hot water supply. (B) of FIG. 8 is sectional drawing which shows the state after the completion of hot water supply.

  As described in the first embodiment and the second embodiment, the rotational speed of the stirring bar 4a is increased as much as possible, and the contact area between the milk M and the inner surface of the milk preparation pod 4 and the surface area of the milk M are maximized. By doing so, the milk M can be quickly cooled. However, in the initial mixing stage (during hot water supply), the hot water to be supplied and the milk M to be stirred collide with the hot air to be removed by the blower of the fan 32, so that when the rotation speed of the stirrer 4a is high, the milk M Splashing and swell are likely to occur, and bubbles are taken into the milk M. Bubbles contained in the initial stage of mixing (during hot water supply) are defoamed to some extent for the reason described in Embodiment 1 in the countercurrent mixed state after completion of hot water supply, but cannot be completely eliminated. Milk containing bubbles is very unsuitable as a method of making drinks for babies because it makes it easier for babies to vomit.

  For this reason, in this Embodiment, as shown to Fig.8 (a), the rotation speed of the stirring element 4a is set small in the mixing initial stage (during hot water supply). As a result, the collision between the hot water supplied in the initial mixing stage (during hot water supply), the stirred milk M, and the hot air removed by the blowing of the fan 32 is reduced, and the bubbles generated in the initial mixing stage (during hot water supply) are reduced. Is possible. Further, as shown in FIG. 8B, in the cooling process of the milk M, the rotation speed of the stirring bar 4a is increased after the hot water supply is completed, and heat exchange between the milk M and the air is promoted in the countercurrent mixing state. As a result, the milk M can be cooled quickly.

  The operation of each part when performing milk preparation using the powdered milk milk preparation device 1C of the present embodiment will be described with reference to FIG. FIG. 9 is a flowchart showing the control operation of the heater 12, the stirrer 4 a, and the control operation of the cooling unit 30 by the control unit 7 during the preparation of the powdered milk preparation device 1 </ b> C.

  In milk preparation using the powdered milk preparation device 1C of the present embodiment, as shown in FIG. 9, first, water of a desired milk preparation amount is supplied to the container 3 (S21). At this time, water may be supplied to the container 3 installed in the apparatus main body 2, or after supplying water to the container 3 removed from the apparatus main body 2, the container 3 may be installed in the apparatus main body 2. .

  Next, the operation panel 6 is operated to start the operation of the powdered milk preparation device 1B. When the operation is started, the control unit 7 that has received a command from the operation panel 6 starts energizing the heater 12 and starts the operation of the fan 32, and starts the motor 5 to start the rotation of the stirring bar 4a. (S22).

  Next, the water in the heater 12 part is heated by the heater 12 and boils. Boiling water passes through the supply pipe 10, the watering nozzle 13, and the funnel 20 in this order, and is supplied to the milk preparation pod 4 to start hot water supply (S23). At this time, the control unit 7 sets the rotation speed of the motor 5, that is, the rotation speed of the stirring bar 4a to a preset set value C. Here, the set value C is set to a small value such as 250 to 350 rpm so that the milk M hardly swells and splashes in the initial stage of hot water supply. The set value C is not necessarily limited to this value.

  Thus, since the rotational speed of the stirrer 4a controlled by the set value C is small, almost no undulation or splash is generated in the milk M, and bubbles generated in the milk M are suppressed. Moreover, it is the countercurrent mixing state in which the direction of rotation of the stirring bar 4a and the direction of the airflow blown from the fan 32 face each other. For this reason, generation | occurrence | production of a bubble is further suppressed.

  Subsequently, when all of the liquid L initially stored in the container 3 is supplied to the milk preparation pod 4, the controller 7 stops energization of the heater 12, while the rotation speed of the stirrer 4 a is set to 700 to, for example. Increase to a set value D such as 800 rpm (S24). The set value D is not necessarily limited to this value. At this time, the set value D is larger than the set value C, but is an appropriate value that does not cause much swell and splash in the milk M.

  Thereby, the cooling of the milk M is promoted by increasing the contact area of the milk M with the inner surface of the milk preparation pod 4 and the surface area of the milk M. On the other hand, since the undulation and splash of the milk M are not generated so much, the generation of bubbles is suppressed. Furthermore, at this time, the rotating direction of the stirring bar 4a and the airflow blown from the fan 32 are in a countercurrent mixed state. For this reason, bubble defoaming is performed, and the bubble content of the produced milk M is further reduced.

  Then, these states are maintained, milk is cooled (S25), and milk preparation is completed.

  Therefore, the milk powder preparation apparatus 1B according to the present embodiment generates milk M in compliance with the “Guidelines for Safe Preparation, Storage and Handling of Dry Powdered Milk for Infants”, and can be arbitrarily selected from the milk preparation. Cooling to temperature can be performed quickly and automatically, and the bubble content of milk M can be reduced.

  Thus, in the powdered milk preparation device 1C in the present embodiment, the control unit 7 starts supplying the liquid L heated by the heater 12 to the milk adjustment pod 4 until the supply ends. The rotation speed of the stirring bar 4a is controlled to be a small set value C such as 250 to 350 rpm as the second set rotation speed set in advance, and after the supply of the liquid L is completed, the rotation speed of the stirring bar 4a Is set in advance and is set to a setting value D such as 700 to 800 rpm as a third setting rotation speed that is larger than the setting value C that is the second setting rotation speed.

  Thereby, bubbles generated in the milk M can be reduced in the initial stage of hot water supply, and heat exchange between the milk M and air can be promoted after the hot water supply is completed, so that the milk M can be cooled quickly. Further, by defoaming the bubbles of the milk M, the milk M having a small bubble content can be generated.

[Embodiment 4]
The following will describe still another embodiment of the present invention with reference to FIGS. The configurations other than those described in the present embodiment are the same as those in the first to third embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 3 are given the same reference numerals, and descriptions thereof are omitted.

  In the powdered milk preparation device 1C of the third embodiment, the control unit 7 causes the rotation direction of the stirring bar 4a to oppose the blowing direction of the fan 32 from the start to the end of the operation of the powdered milk preparation device 1B. The mixture was controlled to be in a mixed state. However, the powdered milk preparation device 1D of the present embodiment is different in that the initial mixing stage is controlled so as to be in a co-current mixing state and the countercurrent mixing state during cooling after completion of hot water supply.

  The configuration of the powdered milk preparation device 1D of the present embodiment is the same as that of the first to third embodiments. Therefore, the description of the configuration of the powdered milk preparation device 1D is omitted.

  The production process of milk M and the cooling process of milk M by the rotation of the cooling unit 30 and the stirring bar 4a in the present embodiment will be described based on FIGS. 10 (a) and 10 (b). (A) of FIG. 10 shows the state of the inside of the milk preparation pod 4 at the time of milk preparation in the powdered milk preparation apparatus 1C, and the rotation direction of the stirring bar 4a and the blowing direction of the fan 32 are the same. It is sectional drawing which shows the state of the initial stage of hot water supply of a direction. FIG. 10B is a cross-sectional view showing a state after the hot water supply is completed in which the rotation direction of the stirring bar 4a and the blowing direction of the fan 32 are opposed to each other.

  In the powdered milk preparation apparatus 1D of the present embodiment, as shown in FIG. 10A, in the initial mixing stage (during hot water supply), the hot water to be supplied with hot water and the milk M to be stirred and the fan 32 are used to remove it. The rotation direction of the stirrer is set so that a co-current mixing state is established so that the heated air collides. And as shown to (b) of FIG. 10, the control part 7 is controlled to reverse the rotation direction of a stirring element after completion of hot water supply. As a result, the collision between the stirred milk M in the initial mixing stage (during hot water supply) and the hot air removed by the blowing of the fan 32 is reduced, and bubbles generated in the initial mixing stage (during hot water supply) can be reduced.

  Further, in the present embodiment, since it is a co-current mixing state in the initial mixing stage (during hot water supply), hot air that is removed by blowing air from the fan 32 even for milk M that has a small amount of hot water supply and has a very high concentration and viscosity. Can support the rotation of the stirring bar 4a. As a result, the milk M can be mixed by the reliable rotation of the stirring bar 4a. In addition, at the initial stage of hot water supply, the temperature of the milk M must be 70 ° C. or higher, so it is better not to cool too much. In the present embodiment, since the rotating direction of the stirrer 4a and the blowing direction of the fan 32 are in a co-current mixing state, the temperature of the milk M does not decrease too much. Also in this method, after the hot water supply is completed, the co-current mixing state becomes the counter-current mixing state, and heat exchange between the milk M and the air can be sufficiently promoted, so that the milk M can be cooled.

  The operation of each part when performing milk preparation using the powdered milk preparation device 1D of the present embodiment will be described with reference to FIG. FIG. 11 is a flowchart showing the control operation of the heater 12, the stirrer 4 a, and the control operation of the cooling unit 30 by the control unit 7 during the preparation of the powdered milk preparation device 1 </ b> D.

  In the milk preparation method using the powdered milk preparation device 1D of the present embodiment, as shown in FIG. 11, first, water of a desired milk preparation amount is supplied to the container 3 (S31). At this time, water may be supplied to the container 3 installed in the apparatus main body 2, or after supplying water to the container 3 removed from the apparatus main body 2, the container 3 may be installed in the apparatus main body 2. .

  Next, the operation panel 6 is operated to start the operation of the powdered milk preparation device 1D. When the operation is started, the control unit 7 that has received a command from the operation panel 6 starts energization of the heater 12 and the operation of the fan 32, and starts the motor 5 to start the rotation of the stirring bar 4a ( S32).

  Next, the water in the heater 12 part is heated by the heater 12 and boils. Boiling water passes through the supply pipe 10, the watering nozzle 13, and the funnel 20 in this order, and is supplied to the milk preparation pod 4 to start hot water supply (S33). At this time, the control unit 7 sets the rotation speed of the motor 5, that is, the rotation speed of the stirring bar 4a to a preset set value C. Here, the set value C is set to a small value such as 250 to 350 rpm so that the milk M hardly swells and splashes in the initial stage of hot water supply. The set value C is not necessarily limited to this value.

  Thus, since the rotational speed of the stirrer 4a controlled by the set value C is small, almost no undulation or splash is generated in the milk M, and bubbles generated in the milk M are suppressed. At this time, the rotating direction of the stirring bar 4a and the direction of the airflow blown from the fan 32 are in a co-current mixing state. For this reason, in milk M with a small amount of hot water supply and a very high concentration and stickiness, the air blown by the fan 32 supports the rotation of the stirrer 4a and can be reliably stirred. Moreover, it is easy to keep the temperature of the milk M at the initial stage of hot water supply at 70 ° C. or higher.

  Subsequently, when all of the water initially stored in the container 3 is supplied to the milk preparation pod 4, the controller 7 stops energization of the heater 12, while the rotational speed of the stirring bar 4 a is set to 700 to 800 rpm, for example. And the rotation direction is reversed (S34). The set value D is not necessarily limited to this value. At this time, the set value D is larger than the set value C, but is an appropriate value that does not cause much swell and splash in the milk M. Thereby, the cooling of the milk M is promoted by increasing the contact area of the milk M with the inner surface of the milk preparation pod 4 and the surface area of the milk M. On the other hand, since the undulation and splash of the milk M are not generated so much, the generation of bubbles is suppressed. In addition, since the rotation direction of the stirring bar 4a is reversed, the rotation direction of the stirring bar 4a and the airflow blown from the fan 32 are in a countercurrent mixed state. For this reason, bubble defoaming is performed, and the bubble content of the produced milk M is further reduced.

  Then, these states are maintained, milk is cooled (S35), and milk preparation is completed.

  Therefore, the milk powder preparation device 1D of the present embodiment generates milk M and adheres to the “Guidelines for Safe Preparation, Storage and Handling of Dry Powdered Milk for Infants”, and is optional from the milk preparation. Cooling to temperature can be performed quickly and automatically, and the bubble content of milk M can be reduced.

[Embodiment 5]
The following will describe still another embodiment of the present invention with reference to FIG. The configurations other than those described in the present embodiment are the same as those in the first to fourth embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 4 are given the same reference numerals, and descriptions thereof are omitted.

  In the powdered milk preparation devices 1A to 1D of the first to fourth embodiments, the liquid L heated by the heater 12 and supplied to the milking pod 4 is powdered milk from the space above the milking pod 4 It was fed directly to PM or milk M. On the other hand, the powdered milk preparation device 1D of the present embodiment is different in that the liquid L is gently supplied to the powdered milk PM or the milk M through the inner wall surface of the milking pod 4.

  The structure of the powdered milk preparation apparatus 1F as a mixture production | generation apparatus of this Embodiment is demonstrated based on FIG. FIG. 12 is a cross-sectional view showing the periphery of the milk preparation pod 4 of the powdered milk preparation device 1D as the mixture production device in the present embodiment.

  In the powdered milk preparation device 1F of the present embodiment, as shown in FIG. 12, the liquid L heated by the heater 12 and supplied to the milk preparation pod 4 through the funnel 20 is used for milk preparation. The pod 4 is supplied into the milk preparation pod 4 along the inner wall surface of the pod 4. Thereby, since the liquid L is gently supplied to the milk adjustment pod 4, the milk M is less likely to be splashed or swelled. For this reason, the production | generation of the bubble of the milk M is reduced.

  Here, in the above-described configuration, the adjustment pod 4 is installed by shifting the dropping port of the liquid L from the funnel 20 to the adjustment pod 4 and the center of the adjustment pod 4 at different positions, and This is achieved by installing the milk adjustment pod 4 in a state slightly inclined with respect to the direction of gravity.

  Alternatively, a guide or the like for transmitting the liquid L from the funnel 20 to the inner wall surface of the milk preparation pod 4 may be provided. Alternatively, the apparatus may be configured so that the position of the discharge port from the funnel 20 is not above the center of the milk adjustment pod 4 but in the vicinity of the wall surface of the milk adjustment pod 4.

[Embodiment 6]
The following will describe still another embodiment of the present invention with reference to FIGS. 13, 14, and 17. FIG. The configurations other than those described in the present embodiment are the same as those in the first to third embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 3 are given the same reference numerals, and descriptions thereof are omitted.

  As shown in FIG. 13, the powdered milk preparation device 1 </ b> G of the present embodiment is different from the powdered milk preparation devices 1 </ b> A to 1 </ b> C of the first to third embodiments, as shown in FIG. 13. The fan 42, the air duct 43 that guides the wind from the fan 42 to the milk preparation pod 4 as the mixture preparation unit, and the wind that passes through the milk preparation pod 4 are provided above the milk preparation pod 4. The liquid L heated by the heater 12 as a liquid heating unit is discharged via the exhaust duct 44 or in the exhaust duct 44 to adjust the milk. The difference is that it flows into the pod 4 for use.

  The configuration of the powdered milk preparation device 1G according to the present embodiment will be described with reference to FIGS. (A) of FIG. 13 is sectional drawing which shows the structure of the powdered milk preparation apparatus 1G of this Embodiment. FIG. 13B is a plan view showing the configuration of the milk adjustment pod 4 of the powdered milk preparation device 1G.

  As shown in FIGS. 13A and 13B, the powdered milk preparation device 1G of the present embodiment is not provided with the watering nozzle 13 and the funnel 20, and the liquid L heated by the heater 12 is The air is discharged from the supply pipe 10 in the exhaust duct 44 and dropped onto the milk adjustment pod 4. The liquid L heated by the heater 12 may not necessarily be discharged from the supply pipe 10 in the exhaust duct 44, and may flow into the milk adjustment pod 4 through the exhaust duct 44. .

  Moreover, in this Embodiment, the cooling part 40 is the ventilation duct 43 opened so that wind may hit from the side, diagonally upper direction, or upper direction with respect to the milk adjustment pod 4, and the center part of the milk adjustment pod 4 And an exhaust duct 44 connected to the exhaust port 44b and arranged so that the wind can escape from above or above.

  Specifically, in the powdered milk preparation apparatus 1G of the present embodiment, as shown in FIG. 13A, the liquid L heated and boiled by the heater 12 passes through the supply pipe 10 and will be described later. The gas is discharged from the supply pipe 10 in the exhaust duct 44. That is, the watering nozzle 13 and the funnel 20 are not provided.

  Further, as shown in FIG. 13A, the cooling unit 40 includes a fan 42 for air blowing, an air inlet 41, a fan duct 43, a fan duct outlet 43a, an exhaust duct 44, and an exhaust duct inlet 44a. And the exhaust port 44b, and functions as a temperature control unit for cooling the liquid L and the mixed milk M.

  The fan 42 is disposed inside the apparatus main body 2, and an intake port 41 for sucking air is provided on the upstream side of the fan 42. On the other hand, a blower duct 43 is provided on the downstream side of the fan 42 for blowing air to the milk adjustment pod 4. The intake port 41 is provided with a filter (not shown) so that dust, foreign matter, etc. do not enter inside. Further, an exhaust duct 44 having an exhaust port 44 b for discharging air to the outside of the apparatus main body 2 is provided downstream of the milk adjustment pod 4.

  The air duct outlet 43a is opened so that the wind hits the milk conditioning pod 4 from the side, obliquely upward, or from above, and the exhaust duct inlet 44a downstream of the milk conditioning pod 4 is adjusted. The milk pod 4 is arranged so that the wind is removed from the upper or lower side of the central portion of the milk pod 4.

  The exhaust duct inlet 44a of the present embodiment is formed on the inner surface of the apparatus body 2 facing the opening 4b of the milk adjustment pod 4 as shown in FIG. The exhaust port 44 b of the exhaust duct 44 is an opening formed on the top surface of the apparatus main body 2.

  The exhaust duct 44 is formed so as to guide the wind flowing from the exhaust duct inlet 44a through the apparatus main body 2 to the exhaust outlet 44b. A part of the wall surface of the exhaust duct 44 is provided with a hole through which the supply pipe 10 passes. The supply pipe 10 extends into the exhaust duct 44 and discharges the liquid L in the exhaust duct 44.

  The exhaust duct 44 may be formed so as to protrude above the top surface of the apparatus body 2. In that case, the exhaust port 44b of the exhaust duct 44 protruding above the top surface of the apparatus main body 2 is preferably formed so as to be substantially parallel to the gravity direction or opposed to the top surface of the apparatus main body 2. That is, the exhaust duct 44 protruding above the top surface of the apparatus body 2 is connected to the exhaust port 44b after being bent. Thereby, it can suppress that the dust and foreign material from the outside fall into the pod 4 for milk preparation from the exhaust port 44b.

  Alternatively, a hole through which air is sent from the fan 42 may be formed in the side surface of the exhaust duct 44. The hole is a hole different from the air duct outlet 43a and serves as an inlet to the air exhaust duct 44 from the fan 42. In this case, most of the wind from the fan 42 is sent to the milk conditioning pod 4 from the blower duct outlet 43 a and partly sent to the exhaust duct 44. At this time, the direction of the wind sent into the exhaust duct 44 is the same as the direction of the swirling flow in the exhaust duct 44. Thereby, discharge of the gas in the exhaust duct 44 can be promoted.

  Moreover, in the powdered milk preparation apparatus 1G of this Embodiment, the apparatus in which the opening part 4b of the milk adjustment pod 4 mounted in the mounting part 2a of the apparatus main body 2 and the exhaust duct inlet 44a are formed. It is preferable that there is almost no space between the inner surface of the main body 2. That is, the distance between the opening 4b and the surface on which the exhaust duct 44 is formed is preferably 1 cm or less.

  Thereby, most of the gas flowing into the milk adjustment pod 4 is sent from the fan 42. Moreover, the gas in the milk adjustment pod 4 is reduced from being released to the outside of the powdered milk preparation device 1G without passing through the exhaust duct 44. That is, mixing of gases other than the air blown from the fan 42 to the cooling unit 40 is reduced, and most of the gas in the milk preparation pod 4 is sent to the exhaust duct 44. Accordingly, an air flow can be effectively generated in the milk adjustment pod 4, and the gas in the milk adjustment pod 4 can be effectively discharged through the exhaust duct 44.

  Therefore, heat exchange between the milk M and air is promoted, and the milk M can be cooled more quickly.

  In the cooling unit 40 according to the present embodiment, by adopting the above-described configuration, air can flow in the milk preparation pod 4, and hot air is attracted from the inside of the milk preparation pod 4 and is easily removed. As a result, heat dissipation from the milk M by convection is promoted. On the contrary, when the air blowing is stopped, the space in the milk adjustment pod 4 becomes a heat reservoir, so that it is difficult to release heat from the milk M.

  Further, as in the first to third embodiments, the cooling process by the fan 42 is performed at the same time as the stirring process by the stirrer 4a, so that it becomes easier to cool.

  The configuration of the powdered milk preparation device 1G of the present embodiment is the same as that of the first to third embodiments except for the configuration of the liquid L discharge unit and the cooling unit 40. Therefore, description of components other than the liquid L discharge unit and the cooling unit 40 of the powdered milk preparation device 1G is omitted.

  17A and 17B of FIG. 17A and FIG. 17B show the effect of promoting the cooling of milk M and the effect of reducing the inclusion of bubbles in milk M in the powdered milk preparation device 1G of the present embodiment having the above-described configuration. This will be described based on d). (A) of FIG. 17 shows the state of heat dissipation and defoaming inside the milk preparation pod 4 in a state where the stirring bar 4a of the milk preparation pod 4 of the powder milk preparation device 1G is rotating. Then, after the wind sent from the blower duct outlet 43a by the fan 42 into the milk preparation pod 4 of the cooling unit 40 turns counterclockwise with respect to the flow direction of the milk M by the stirrer rotating operation, the exhaust duct inlet It is sectional drawing which shows the state (henceforth "opposite swirl flow mixing state") discharged | emitted to 44a. FIG. 17D is a state of heat dissipation and defoaming inside the milk preparation pod 4 in a state where the stirring bar 4a of the milk preparation pod 4 of the powder milk preparation device 1Z as a comparative example is rotating. The air sent from the air duct outlet 43a into the milk preparation pod 4 by the fan 42 of the cooling unit 40 of the powder milk preparation device 1Z is swung oppositely in the milk preparation pod 4. FIG. 6 is a cross-sectional view showing a state in which the air is discharged in one direction to the exhaust duct inlet 44a (hereinafter referred to as “one-way mixed state”).

  In the powdered milk preparation device 1G of the present embodiment, the cooling process by the cooling unit 40 is performed simultaneously with the stirring process by the stirrer 4a, and the rotation direction of the stirrer 4a and the direction of the airflow by the fan 42 are opposed to each other. It is turning. As a result, the milk M can be more easily cooled and the bubble content can be reduced.

  That is, as shown in FIG. 17A, in the counter-swirl flow mixed state in the present embodiment, the rotating direction of the stirrer 4a and the direction of the air flow by the fan 42 are counter-rotating. As a result, the wind speed hitting the liquid level of the milk M being stirred increases to the rotational speed of the stirrer 4a plus the wind speed of the air flow generated by the fan 32, as shown in FIG. 17 (d). Compared with the unidirectional mixing state, it is possible to take a sufficient path for the wind and milk to come into contact with each other. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 42 is promoted. The hot air in the milk adjustment pod 4 joins the air flow generated by the fan 42 and is sequentially sent to the exhaust duct inlet 44a. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between the milk M and air is promoted, and the milk M can be cooled more quickly.

  Further, in the counter-swirl mixing state in the present embodiment, the one-way mixing shown in FIG. 17 (d) is caused by the counter-rotation of the rotation direction of the stirrer 4a and the direction of the air flow generated by the fan 42. Compared to the state, defoaming of bubbles generated during mixing is promoted. This is because the air flow generated by the fan 42 collides with the bubbles on the liquid level of the milk M and exerts pressure on the bubbles, and moving the bubbles causes friction between the bubbles and makes the bubbles easy to flip.

  Therefore, in this Embodiment, the milk M with little bubble content can be produced | generated.

  Further, in the present embodiment, as shown in FIGS. 13 and 17A, the liquid L heated by the heater 12 is drawn into the exhaust duct 44 by the supply pipe 10, and the exhaust duct 44 Is discharged into the milk preparation pod 4. For this reason, when hot water supplied from the heater 12 passes through the exhaust duct 44, heat exchange with the wind passing through the exhaust duct 44 sent from the fan 42 is promoted. Therefore, the temperature of the hot water supplied into the milk preparation pod 4 can be lowered.

  Thus, in the powdered milk preparation device 1G of the present embodiment, the cooling unit 40 includes the fan 42, the air duct 43 that guides the wind from the fan 42 to the milk adjustment pod 4, and the milk adjustment pod 4. An exhaust duct 44 that guides the wind that has passed through to an exhaust port 44b provided above the milk adjustment pod 4 is provided. The liquid L heated by the heater 12 is discharged through the exhaust duct 44 or in the exhaust duct 44 and flows into the milk adjustment pod 4.

  As a result, an air flow is generated in the milk adjustment pod 4, and hot air is drawn from the inside of the milk adjustment pod 4 to be easily removed. As a result, heat dissipation from the milk M by convection is promoted.

  Moreover, in the powdered milk preparation apparatus 1G of this Embodiment, the control part 7 controls the rotation direction of the stirring element 4a so that the rotation direction of the stirring element 4a may oppose the direction of the airflow by the fan 42. FIG.

  Thus, the milk M can be more easily cooled and the bubble content can be reduced by rotating the rotating direction of the stirrer 4a and the direction of the airflow generated by the fan 42 to face each other.

  That is, in the counter-swirl flow mixed state in the present embodiment, the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 42 are opposed to each other. Thereby, the wind speed which hits the liquid level of the milk M which is being stirred increases to the rotational speed of the stirring bar 4a plus the wind speed of the air flow by the fan 32, and a sufficient path for the wind and milk to contact is taken. It is possible. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 42 is promoted. Further, the hot air in the milk adjustment pod 4 joins the air flow generated by the fan 42 and is sequentially sent to the exhaust duct inlet 44a. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between the milk M and air is promoted, and the milk M can be cooled more quickly.

  Further, since the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 42 are opposed to each other, the airflow generated by the fan 42 collides with bubbles on the liquid level of the milk M and exerts pressure on the bubbles. At the same time, by moving the air bubbles, friction between the air bubbles is generated and the air bubbles are likely to be flipped. Therefore, the defoaming of the air bubbles generated during the mixing is promoted.

  The liquid L heated by the heater 12 is discharged through the exhaust duct 44 or in the exhaust duct 44 and flows into the milk adjustment pod 4. For this reason, when hot water supplied from the heater 12 passes through the exhaust duct 44, heat exchange with the wind passing through the exhaust duct 44 sent from the fan 42 is promoted. Therefore, the temperature of the hot water supplied into the milk preparation pod 4 can be lowered.

  In addition, this invention is not limited to said embodiment, A various change is possible within the scope of the present invention.

  For example, also in the exhaust duct 44 in the powdered milk preparation device 1G of the present embodiment, a duct return portion 44c may be provided in the exhaust duct 44 as in the first to third embodiments. This will be described with reference to FIG. FIG. 14 is a cross-sectional view showing a configuration of the cooling unit 40 of the powdered milk preparation device 1G.

  The exhaust duct 44 is in an environment in which steam generated from the heated liquid L poured into the milk adjustment pod 4 or the milk prepared milk M is likely to condense. Therefore, as shown in FIG. 14, a duct return portion 44 c is provided as a dew condensation water fall prevention portion so that water droplets condensed inside the exhaust duct 44 do not fall into the milk conditioning pod 4. That is, the duct return portion 44c is formed by folding the end portion of the cylindrical exhaust duct inlet 44a inward so that water droplets condensed inside the exhaust duct 44 are collected in the duct return portion 44c.

  Here, although not shown, the duct return portion 44c may be provided as an attachment duct return member that can be attached to and detached from the exhaust duct inlet 44a. The attachment duct return member is preferably formed, for example, so as to fit into the exhaust duct inlet 44a, and can be fixed to the exhaust duct inlet 44a. Thereby, after the completion of the milk M preparation, the attachment duct return member can be removed, and the accumulated condensed water can be discarded and the attachment duct return member can be cleaned. Therefore, milk M can be produced more hygienically.

[Embodiment 7]
The following will describe still another embodiment of the present invention with reference to FIGS. 15 and 17B. The configuration other than that described in the present embodiment is the same as that of the sixth embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of the sixth embodiment are given the same reference numerals, and explanation thereof is omitted.

  In the powdered milk preparation device 1G of the sixth embodiment, the liquid L heated by the heater 12 was discharged from the supply pipe 10 in the exhaust duct 44 and dropped onto the milk adjustment pod 4. In contrast, in the powdered milk preparation device 1H of the present embodiment, the liquid L heated by the heater 12 flows into the watering nozzle 13 and is discharged from the watering nozzle 13 in the exhaust duct 44. The point of dripping onto the milk preparation pod is different.

  The configuration of the powdered milk preparation device 1H of the present embodiment will be described based on FIGS. 15 (a) and 15 (b). (A) of FIG. 15 is sectional drawing which shows the structure of the powdered milk preparation apparatus 1H of this Embodiment. FIG. 15B is a plan view showing the configuration of the milk adjustment pod 4 of the powdered milk preparation device 1H.

  In the powdered milk preparation device 1H according to the present embodiment, as shown in FIGS. 15A and 15B, the liquid L heated by the heater 12 passes through the supply pipe 10 to the tip of the supply pipe 10. It flows into the attached watering nozzle 13, is discharged from the watering nozzle 13 in the exhaust duct 44, and is dropped onto the milk conditioning pod.

  Here, in the present embodiment, the watering nozzle 13 extends into the exhaust duct 44 from a hole provided in a part of the wall surface of the exhaust duct 44. Here, it is preferable that the watering nozzle 13 has a structure that can be detached from the supply pipe 10. Thereby, the watering nozzle 13 can be removed from the supply pipe 10 and cleaned. Therefore, milk M can be prepared more hygienically.

  Further, the watering nozzle 13 and the supply pipe 10 may be made of different materials. The supply pipe 10 housed in the apparatus main body 2 is made of an inexpensive material such as stainless steel or polypropylene, and the water spray nozzle 13 that is in contact with the outside air is made of a material that does not corrode or deteriorate with ultraviolet rays, such as Teflon (registered trademark). Can be used. Thereby, manufacturing cost can be reduced.

  The configuration of the powdered milk preparation device 1H of the present embodiment is the same as that of the sixth embodiment except for the configuration of the watering nozzle 13. Therefore, description of structures other than the watering nozzle 13 of the powdered milk preparation apparatus 1G is abbreviate | omitted.

  FIG. 15 (a) (b) and FIG. 17 (b) show the milk M production process in the powdered milk preparation apparatus 1H having the above configuration and the milk M cooling process by the rotation of the cooling unit 40 and the stirring bar 4a. ). (B) of FIG. 17 shows that the wind sent from the air duct outlet 43a into the milk preparation pod 4 by the fan 42 in the cooling unit 40 of the powder milk preparation device 1H of the present embodiment is rotated by the stirring bar. It is sectional drawing which shows the state discharged | emitted to the exhaust duct inlet_port | entrance 44a after turning opposite with respect to the flow direction of the milk M by.

  In the powdered milk preparation device 1H of the present embodiment, as shown in FIGS. 15A and 15B, the liquid L heated and boiled by the heater 12 passes through the supply pipe 10 and is sprinkled with the watering nozzle 13. Flows into. Thereafter, the liquid L is discharged from the watering nozzle 13 in the exhaust duct 44. As in the first to fifth embodiments, the watering nozzle 13 has a function of dispersing and ejecting the liquid L that has been heated and pumped.

  When the liquid L ejected from the watering nozzle 13 is supplied to the milk conditioning pod 4 through the exhaust duct 44, as shown in FIGS. 15 (a) and 17 (b), the liquid L is exhausted. The air contacts the wind from the duct inlet 44a through the exhaust duct 44 toward the exhaust outlet 44b. At this time, the liquid L ejected from the watering nozzle 13 exchanges heat with the wind in the exhaust duct 44, and the temperature of the liquid L decreases. Further, since the liquid L is finely dispersed by the watering nozzle 13, the surface area is increased, so that heat exchange between the liquid L and the wind in the exhaust duct 44 is promoted. For this reason, the temperature of the liquid L supplied into the milk adjustment pod 4 can be lowered. Therefore, in the seventh embodiment, the milk M can be cooled to the temperature for drinking more quickly than in the sixth embodiment.

  Similarly to the sixth embodiment, the cooling process by the fan 42 is performed at the same time as the stirring process by the stirrer 4a, thereby facilitating cooling.

  As in the sixth embodiment, as a method for reducing the inclusion of bubbles in the milk M, in this embodiment, the cooling process by the cooling unit 40 is performed simultaneously with the stirring process by the stirrer 4a and stirring. The rotation direction of the child 4a and the direction of the airflow generated by the fan 42 are opposed to each other. As a result, the milk M can be more easily cooled and the bubble content can be reduced.

  In the counter-swirl mixing state in the present embodiment, as shown in FIG. 17B, the rotation direction of the stirrer 4a and the direction of the air flow by the fan 42 are counter-rotating. Thereby, the wind speed which hits the liquid level of the milk M under stirring increases to the rotational speed of the stirring bar 4a plus the wind speed of the airflow generated by the fan 32. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 42 is promoted. The hot air in the milk adjustment pod 4 joins the air flow generated by the fan 42 and is sequentially sent to the exhaust duct inlet 44a. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between the milk M and air is promoted, and the milk M can be cooled more quickly.

  Thus, in the powdered milk preparation device 1H of the present embodiment, the liquid L heated and boiled by the heater 12 passes through the supply pipe 10 and flows into the watering nozzle 13. Thereafter, the liquid L is discharged from the watering nozzle 13 in the exhaust duct 44. Here, the water spray nozzle 13 has a function of dispersing and ejecting the liquid L that has been heated and pumped.

  Thereby, the liquid L ejected from the watering nozzle 13 and the wind in the exhaust duct 44 exchange heat, and the temperature of the liquid L decreases. Further, since the liquid L is finely dispersed by the watering nozzle 13 and the surface area is increased, heat exchange between the liquid L and the wind in the exhaust duct 44 is promoted. For this reason, the temperature of the liquid L supplied into the milk adjustment pod 4 can be lowered. Therefore, in Embodiment 7, it is possible to cool milk M to a temperature at which it is drinkable faster than Embodiment 6.

[Embodiment 8]
The following will describe still another embodiment of the present invention with reference to FIG. 16 and FIG. The configurations other than those described in the present embodiment are the same as those in the seventh embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of the seventh embodiment are given the same reference numerals, and descriptions thereof are omitted.

  In the powdered milk preparation device 1H of the seventh embodiment, the exhaust duct inlet 44a, which is the inlet of the exhaust duct 44, is in the state where the milk adjustment pod 4 is placed on the placement portion 2a. It was formed in the inner surface of the apparatus main body 2 facing the opening 4b. On the other hand, in the powdered milk preparation device 1I of the present embodiment, the exhaust duct inlet 44a is different in that it is arranged not in the upper part of the milk preparation pod 4 but in the space in the milk preparation pod 4. Yes.

  The structure of the powdered milk preparation apparatus 1I of this Embodiment is demonstrated based on (a) and (b) of FIG. (A) of FIG. 16 is sectional drawing which shows the structure of the powdered milk preparation apparatus 1I of this Embodiment. FIG. 16B is a plan view showing the configuration of the milk adjustment pod 4 of the powdered milk preparation device 1I.

  As shown in FIGS. 16A and 16B, in the powder milk preparation device 1I of the present embodiment, the exhaust duct inlet 44a is not above the milk adjustment pod 4, but in the space inside the milk adjustment pod 4. It is arranged in.

  The configuration of the powdered milk preparation device 1I of the present embodiment is the same as that of the seventh embodiment except for the configuration of the exhaust duct 44 and the exhaust duct inlet 44a. Therefore, description of structures other than the exhaust duct 44 and the exhaust duct inlet 44a of the powdered milk preparation apparatus 1I is abbreviate | omitted.

  16 (a), (b) and FIG. 16 (a), and FIG. 16 (b) and FIG. 16 (a) and FIG. This will be described with reference to FIG. FIG. 17 (c) shows that the air sent from the air duct outlet 43a into the milk preparation pod 4 by the fan 42 of the cooling unit 40 of the powder milk preparation device 1I of the present embodiment is rotated by the stirrer. It is sectional drawing which shows the state discharged | emitted to the exhaust duct inlet_port | entrance 44a provided in the milk adjustment pod 4 after turning opposite with respect to the flow direction of the milk M by.

  In the powdered milk preparation device 1I of the present embodiment, as shown in FIGS. 16A and 16B, in the state where the milk adjustment pod 4 is placed on the placement portion 2a, the exhaust duct inlet 44a is These are arranged in a space in the milk adjustment pod 4. That is, the exhaust duct 44 in the present embodiment is formed between the exhaust port 44 b provided on the top surface of the apparatus body 2 and the exhaust duct inlet 44 a provided in the space inside the milk adjustment pod 4. For example, it is a cylindrical pipe. The material of the pipe is, for example, the same material as that of the apparatus main body 2.

  In other words, the exhaust duct 44 in the present embodiment protrudes into the milk conditioning pod 4 from the position of the exhaust duct inlet 44a in the seventh embodiment.

  Here, it is preferable that the portion of the exhaust duct 44 protruding into the milk adjustment pod 4 can be slid in the direction in which the watering nozzle 13 is disposed. Thereby, when the milk adjustment pod 4 is placed on the placement portion 2a, the exhaust duct 44 protruding from the apparatus main body 2 is less likely to get in the way. Examples of the sliding method include sliding the entire pipe forming the exhaust duct 44 upward so as to protrude from the top surface of the apparatus main body 2. When sliding in such a manner, for example, a part of a pipe forming the exhaust duct 44 may be cut so as not to interfere with the watering nozzle 13.

  Similar to the seventh embodiment, the cooling process by the fan 42 is performed at the same time as the stirring process by the stirrer 4a, thereby facilitating cooling.

  As in the seventh embodiment, as a method for reducing the inclusion of bubbles in the milk M, in this embodiment, the cooling process by the cooling unit 40 is performed simultaneously with the stirring process by the stirrer 4a, and stirring is performed. The rotation direction of the child 4a and the direction of the airflow generated by the fan 42 are opposed to each other. As a result, the milk M can be more easily cooled and the bubble content can be reduced. Furthermore, in the powdered milk preparation device 1I according to the present embodiment, the exhaust duct inlet 44a is provided in the space in the milk preparation pod 4, so that the cooling of the milk M and the defoaming of the bubbles are further promoted. .

  That is, as shown in FIG. 17C, in this embodiment, since the exhaust duct inlet 44a is arranged in the milk adjustment pod 4, the fan 42 adjusts the milk adjustment pod 4 from the air duct outlet 43a. An even more sufficient path can be taken for the wind sent into and the milk M to contact. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 42 and the defoaming of bubbles generated in the milk M are promoted.

  Therefore, in the eighth embodiment, the bubble content is smaller than in the seventh embodiment, and the milk M can be cooled to the temperature for drinking faster.

  Thus, in the powdered milk preparation device 1I of the present embodiment, the exhaust duct inlet 44a is provided in the milk adjustment pod 4.

  Thereby, the path | route where the wind and milk M which were sent in the pod 4 for milk preparation from the ventilation duct exit 43a by the fan 42 contact can be taken more fully. As a result, heat exchange between the liquid level of the milk M and the airflow generated by the fan 42 and the defoaming of bubbles generated in the milk M are promoted.

Therefore, the bubble content is small, and the milk M can be cooled to the temperature of drinking more quickly.
[Results of confirmation experiment]
The result of confirming the cooling rate of milk produced by the powdered milk preparation device of the present invention and the amount of bubbles in the milk will be described below.

(Confirmation experiment 1)
In this confirmation experiment 1, corresponding to the powdered milk preparation device 1A of the first embodiment, the control unit 7 starts rotating the stirrer 4a at the start of hot water supply, and sets the rotation speed of the stirrer to 1750 rpm as the set value A. Controlled. Then, the stirring bar rotation speed was controlled to increase from 1750 rpm as the set value A to 3730 rpm as the set value B in 90 seconds from the start of hot water supply to the end of hot water supply. Then, the control part 7 controlled the rotation speed of the stirring element 4a to maintain at 3730 rpm until the milk temperature became 45 degreeC, and continued stirring the milk M.

  The experimental conditions at this time were: room temperature 25 ° C., supply water temperature 25 ° C., supply water amount 240 cc, powder milk PM33 g was set in the milk preparation pod 4, 900 W power was applied to the heater 12, and the hot water supply speed 160 cc / min Then, milk was prepared by mixing powdered milk PM and hot water while supplying hot water into the milk preparation pod 4.

  Moreover, the weight of the bubbles in the milk M was measured as an evaluation item. Regarding the measurement of the weight of bubbles in the milk M, after the produced milk M was cooled to a temperature suitable for feeding, the amount of bubbles in the milk M was examined as follows. That is, using a mesh-shaped metal fitting such as tea strainer, milk M and bubbles were separated from milk M containing bubbles by removing only milk M. Then, the weight of the bubbles was measured.

  As a result, the weight of bubbles measured by separating from the produced milk M was 8 g (equivalent to 8 cc).

(Confirmation experiment 2)
In this confirmation experiment 2, corresponding to the powdered milk preparation device 1B of the second embodiment, after the hot water supply ends, the control unit 7 keeps the rotation speed of the stirrer 4a constant for a predetermined time, and then rotates the rotation speed. An experiment was conducted to confirm the method of controlling so as to decrease gradually.

  That is, when the rotational speed of the stirrer 4a at the time of milk mixing is high as in the milk preparation performed in the confirmation experiment 1, bubbles are likely to be contained in the finished milk due to splashing or undulation of the milk M.

  Therefore, in this confirmation experiment 2, from the start of hot water supply until 250 seconds later, as in confirmation experiment 1, the control unit 7 starts rotating the stirrer 4a with the start of hot water supply, and sets the rotation speed of the stirrer as the set value A. The stirring bar rotation speed was controlled to increase from 1750 rpm as the set value A to 3730 rpm as the set value B in 90 seconds from the start of hot water supply to the end of hot water supply.

  However, in this confirmation experiment 2, between 250 seconds after the start of hot water supply and 350 seconds later, unlike the confirmation experiment 1, the control unit 7 gradually increases the stirring speed so that the rotation speed of the stirrer is changed from 3730 rpm to 0 rpm. Controlled to decrease.

  The experimental conditions are the same as in Confirmation Experiment 1.

  Thereby, since splashing and undulation of milk can be reduced, in the finished milk M, reduction of the bubble content can be expected.

  Also in the measurement results, the weight of bubbles measured separately from the produced milk M was 4 g (corresponding to 4 cc), and it was confirmed that the bubbles contained in the milk M were reduced.

(Comparative Example 1)
As Comparative Example 1, the amount of bubbles inside the milk M was measured in a state where the control unit 7 did not rotate the stirring bar 4a and the cooling unit 30 was not operated. That is, in the milk M of Comparative Example 1, the hot water supplied into the milk preparation pod 4 and the powdered milk PM are mixed by agitation by the momentum at the time of hot water supply and the subsequent natural convection, and then left to stand and release. It was produced by cooling.

  The experimental conditions are the same as those in Confirmation Experiments 1 and 2.

  As a result, the weight of bubbles measured by separating from the produced milk was 1 g (corresponding to 1 cc).

(Comparative Example 2)
In the comparative example 2, the control part 7 started rotation of the stirring element 4a with the hot water supply start, and set the rotation speed to 1750 rpm. Then, the control part controlled to maintain the rotation speed of a stirring element at 1750 rpm, and maintained rotation speed until completion | finish of cooling of the produced | generated milk after completion | finish of hot water supply.

  That is, in the comparative experiment 2, the rotation speed of the stirring bar 4a is constant at 1750 rpm from the beginning to the end.

  The experimental conditions are the same as those in Confirmation Experiments 1 and 2.

  As a result, the weight of bubbles measured by separating from the produced milk M was 6 g (corresponding to 6 cc).

  The cooling rate of each milk M produced | generated in the said confirmation experiment 2, the comparative example 1, and the comparative example 2 is demonstrated using FIG. FIG. 18 shows the effect of the rotational speed of the stirring bar 4a of the milk preparation pod 4 on the relationship between the temperature of the milk M and the elapsed time from the start of hot water supply in the powdered milk preparation device 1B of the second embodiment. It is a graph.

  As shown in FIG. 18, in Comparative Example 1, the cooling rate of the milk temperature was slow, and the milk temperature was as high as 65 ° C. even after 400 seconds had elapsed after the completion of hot water supply. In Comparative Example 2, the cooling rate of the milk temperature was faster than that of Comparative Example 1, and the milk temperature was about 57 ° C. when 400 seconds had elapsed after the completion of hot water supply.

  On the other hand, in the confirmation experiment 2 in the powdered milk preparation device 1B of the present embodiment, the cooling rate of the milk M is obviously faster than those of the comparative example 1 and the comparative example 2, and is about 250 seconds after the hot water supply is completed. It was confirmed that the milk temperature decreased to 45 ° C., which is a suitable temperature.

  From the results of FIG. 18, it was confirmed that the cooling rate of the milk M is improved by operating the stirring bar 4a during the generation and cooling of the milk M. Further, it was confirmed that the cooling rate was improved as the number of rotations of the stirring bar was increased.

  In addition, the weights of the bubbles separated from each milk M produced in Confirmation Experiment 1, Confirmation Experiment 2, Comparative Example 1 and Comparative Example 2 were 8 g (equivalent to 8 cc), 4 g (equivalent to 4 cc), 1 g (equivalent to 1 cc), respectively. ), 6 g (equivalent to 6 cc).

  From this, it was shown that bubbles are easily generated in the milk M when the rotation speed of the stirring bar is large. Here, in the confirmation experiment 2 in which the rotation speed of the stirrer was decreased during the cooling of the produced milk M, the content of bubbles in the milk M after cooling was smaller than that in the confirmation experiment 1, and thus the milk M was agitated. It was confirmed that the content of bubbles in the milk M can be reduced by performing control that decreases during cooling.

(Confirmation experiment 3)
Next, using the powdered milk preparation device 1A of the present embodiment, a confirmation experiment was conducted on the effect of the countercurrent mixing state in which the rotation direction of the stirrer 4a and the direction of the airflow by the fan 32 face each other. . The rotation speed of the stirring bar 4a was constant.

  The experimental conditions were as follows: room temperature 25 ° C., supply water temperature 25 ° C., and supply water amount 240 cc. After setting 33 g of powdered milk PM in the milk preparation pod 4, 900 W power was applied to the heater 12 and the hot water supply speed 160 cc / min. While supplying hot water into the milk preparation pod 4, the fan 33 is used to blow air in the duct 33 at an air volume of 0.65 m ^ 3 / min, and the powdered milk PM and hot water are mixed at a stirring bar rotation speed of 763 rpm. Prepared the milk. Here, the rotation of the stirrer 4a was controlled by the control unit 7 so that the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 32 were the same (co-current mixing state).

  As an evaluation item, the weight of bubbles in the milk M was measured.

As a result, the weight of bubbles measured by separating from the produced milk was 2 g (corresponding to 2 cc).
(Comparative Example 3)
As a comparative example of the confirmation experiment 3, an experiment was conducted on a co-current mixing state in which the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 32 are parallel.

  Experimental conditions and evaluation items are the same as in Confirmation Experiment 3.

  As a result, the weight of bubbles measured by separating from the produced milk M was 5 g (corresponding to 5 cc).

  The cooling rate of each milk M produced | generated in the said confirmation experiment 3 and the comparative example 3 is demonstrated based on FIG. FIG. 19 shows the relationship between the temperature of milk M and the elapsed time from the start of hot water supply, whether or not the rotation direction of stirrer 4a and the blowing direction of fan 32 in powdered milk preparation device 1A of the present embodiment are the same. It is a graph which shows the influence which acts on.

  In the countercurrent mixing state in the confirmation experiment 3, the rotation direction of the stirrer 4a and the blowing direction of the fan 32 face each other, so that steam or hot air generated during the mixing is compared with the cocurrent mixing state of the comparative example 3. Removal is promoted.

  Therefore, in the countercurrent mixing state in the confirmation experiment 3, as shown in FIG. 19, it was confirmed that the heat exchange between the milk M and the air is promoted and the milk M can be cooled more quickly.

  Further, the weights of the bubbles separated from the milk M prepared in the confirmation experiment 3 and the comparative example 3 were 2 g (corresponding to 2 cc) and 5 g (corresponding to 5 cc), respectively.

  From this, it was confirmed that the bubbles of the milk M can be reduced by setting the countercurrent mixing state.

  From the above, in the powdered milk preparation device 1A of the present embodiment, in the countercurrent mixing state, the rotation direction of the stirrer 4a and the blowing direction of the fan 32 are opposed to each other compared to the cocurrent mixing state. Since defoaming of bubbles generated during mixing was promoted, it was understood that milk M with less bubble content could be generated.

  Therefore, by using the powdered milk preparation method of the present embodiment, milk M is produced and milked while complying with “Guidelines for Safe Preparation, Storage and Handling of Dry Powdered Milk for Infants”. It was confirmed that the cooling to the arbitrary temperature can be performed quickly and automatically.

(Confirmation experiment 4)
In the present confirmation experiment 4, corresponding to the powdered milk preparation device 1C of the third embodiment, the rotation speed of the stirring bar 4a at the initial stage of mixing (during hot water supply) is set to a set value C (small) = 315 rpm, After the hot water supply was completed, the rotation speed of the stirring bar 4a was increased to the set value D (large) = 764 rpm.

  Experimental conditions and evaluation items are the same as in Confirmation Experiment 3. That is, under the conditions of room temperature 25 ° C., supply water temperature 25 ° C., and supply water amount 240 cc, milk powder PM33 g is set in the milk preparation pod 4, then 900 W of electric power is applied to the heater 12 and milk preparation is performed at a hot water supply speed of 160 cc / min. While supplying hot water into the pod 4, the fan 33 is used to blow the air in the duct 33 at an air volume of 0.65 m ^ 3 / min, and the powdered milk PM and hot water are mixed at a stirrer rotational speed of 763 rpm to prepare milk. did. Here, the rotation of the stirrer 4a was controlled by the control unit 7 so that the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 32 were opposed to each other (counterflow mixing state). As an evaluation item, the weight of bubbles in the milk M was measured.

  As a result, the weight of bubbles measured by separating from the produced milk M was 1 g (corresponding to 1 cc), and it was confirmed that the bubbles contained in the milk M were reduced.

(Confirmation experiment 5)
In this confirmation experiment 5, corresponding to the powdered milk preparation device 1D of the fourth embodiment, the rotation direction of the stirrer 4a at the initial stage of mixing (during hot water supply) is set to a cocurrent mixing state, and stirring is performed after hot water supply is completed. The rotation direction of the child 4a was set to a countercurrent mixing state.

  Experimental conditions and evaluation items are the same as those in Confirmation Experiment 4.

  As a result, the weight of bubbles measured separately from the produced milk M was 0.3 g (corresponding to 0.3 cc), and it was confirmed that the bubbles contained in the milk M were reduced.

(Confirmation experiment 6)
In this confirmation experiment 6, hot water supplied from the funnel 20 is supplied along the inner surface of the milk preparation pod 4 in a state where the splash is reduced, corresponding to the powdered milk preparation device 1F of the fifth embodiment. It was confirmed whether or not the bubble content of milk M could be reduced.

  Experimental conditions and evaluation items are the same as those in the confirmation experiments 4 and 5.

  As a result, the weight of bubbles measured by separating from the produced milk was 2 g (corresponding to 2 cc), and it was confirmed that the bubbles contained in the milk M were reduced.

(Confirmation experiment 7)
In the present confirmation experiment 7, the hot water supplied from the supply pipe 10 in the cooling unit 40 and the exhaust duct 44 in the exhaust milk duct 44 corresponds to the powdered milk preparation device 1G of the sixth embodiment. A confirmation experiment was conducted on the effect of the configuration supplied to the milk preparation pod 4. The controller 7 started the rotation of the stirring bar 4a at the start of the hot water supply, and controlled the rotation speed of the stirring bar to 900 rpm as the set value A. Then, the control part 7 controlled the rotation speed of the stirring element 4a to maintain 900 rpm which is a setting value until the milk temperature became 45 degreeC, and continued stirring the milk M.

  The experimental conditions at this time were: room temperature 25 ° C., supply water temperature 25 ° C., supply water amount 240 cc, powder milk PM33 g was set in the milk preparation pod 4, 900 W power was applied to the heater 12, and the hot water supply speed 160 cc / min While supplying hot water into the milk conditioning pod 4, the fan 42 is blown into the exhaust duct 44 at an air volume of 0.65 m ^ 3 / min to mix the powdered milk PM and hot water, thereby preparing milk. went.

  Here, the rotation of the stirrer 4a was controlled by the control unit 7 so that the rotation direction of the stirrer 4a and the direction of the airflow generated by the fan 42 face each other (opposed swirl flow mixed state).

  As an evaluation item, the weight of bubbles in the milk M was measured.

  As a result, the weight of bubbles measured by separating from the produced milk M was 1 g (corresponding to 1 cc).

(Verification Experiment 8)
In the present confirmation experiment 8, hot water supplied from the cooling unit 40 and the watering nozzle 13 passes through the exhaust duct 44 and is supplied to the milk preparation pod 4 corresponding to the powdered milk preparation device 1H of the seventh embodiment. A confirmation experiment was conducted on the effect of the configuration. The experimental conditions and evaluation items are the same as those in the confirmation experiment 1.

  As a result, the weight of bubbles measured by separating from the produced milk M was 1 g (corresponding to 1 cc).

(Verification experiment 9)
In this confirmation experiment 7, a confirmation experiment was conducted on the effects of the cooling unit 40 and the configuration in which the exhaust duct port was provided in the milk adjustment pod, corresponding to the powder milk preparation device 1I of the eighth embodiment. It was. The experimental conditions and evaluation items are the same as those in the confirmation experiments 1 and 2.

  As a result, the weight of bubbles measured by separating from the produced milk M was 0.5 g (corresponding to 1 cc).

(Comparative Example 4)
Corresponding to the powdered milk preparation device 1Z as a comparative example of the confirmation experiments 7 to 9, a confirmation experiment was performed for the unidirectional mixed state. The experimental conditions and evaluation items are the same as those in the confirmation experiments 6-8.

  As a result, the weight of bubbles measured by separating from the produced milk M was 3 g (corresponding to 3 cc).

  The cooling rate of each milk M produced | generated in the said confirmation experiments 7-9 and the comparative example 4 is demonstrated using FIG. FIG. 20 is a graph showing the influence of the configuration of the cooling unit 40 in the powdered milk preparation devices 1G to 1I of Embodiments 6 to 8 on the relationship between the temperature of the milk M and the elapsed time from the start of hot water supply.

  As shown in FIG. 20, in Comparative Example 4, the milk cooling rate was slow, and the time from the start of milk preparation until the temperature of milk M reached 45 ° C. was 298 seconds.

  On the other hand, in the powdered milk preparation devices 1G to 1I of Embodiments 6 to 8, the time from the start of milk preparation until the temperature of the milk M reaches 45 ° C. is 267 seconds, 236 seconds, and 222 seconds, respectively. Met.

  From the result of FIG. 20, as the cooling unit 40, the air duct 43 opened so that the wind hits the milk preparation pod 4 from the side, diagonally upward, or from above, and the diagonal of the central part of the milk preparation pod 4 The cooling rate of the milk M can be increased by providing the exhaust duct 44 that is arranged so that the wind is removed from the upper side or the upper side and connected to the exhaust port 44b, and the liquid L is discharged in the exhaust duct 44. It was confirmed to improve. It was also confirmed that the cooling rate of the milk M was further improved by providing the watering nozzle 13 and providing the exhaust duct inlet 44a in the milk adjustment pod 4.

  In addition, the weights of the bubbles separated from the milk M prepared in the confirmation experiments 7 to 9 and Comparative Example 4 were 1 g (equivalent to 1 cc), 1 g (equivalent to 1 cc), 0.5 g (0.5 cc), respectively. Equivalent) and 3 g (equivalent to 3 cc).

  From this, it was confirmed that the bubbles of the milk M can be reduced by providing the cooling unit 40 described above. Moreover, it was confirmed that the content of the bubbles of the milk M can be further reduced by providing the watering nozzle 13 and providing the exhaust duct inlet 44 a in the milk adjustment pod 4.

  From the above, in the counter-swirl mixed state in the powdered milk preparation devices 1G, 1H, and 1I of the present embodiment, the rotation direction of the stirrer 4a is compared to the unidirectional mixed state in the powdered milk preparation device 1Z as a comparative example. Since the air flow direction of the fan 32 and the fan 32 are opposed to each other, heat exchange between wind and milk and defoaming of bubbles generated during mixing are promoted. As a result, it was confirmed by experiments that milk M containing less bubbles and capable of being cooled to a temperature suitable for drinking in a short time can be produced.

  Therefore, by using the powdered milk preparation method of the present embodiment, milk M is produced and milked while complying with “Guidelines for Safe Preparation, Storage and Handling of Dry Powdered Milk for Infants”. It was confirmed that the cooling to the arbitrary temperature can be performed quickly and automatically.

[Summary]
The mixture generation apparatus (powdered milk preparation apparatus 1A) according to aspect 1 of the present invention includes a liquid heating unit (heater 12) for heating the supplied liquid L, and the liquid heating unit (heater 12) for the mixture raw material (powdered milk PM). In the mixture production apparatus provided with the mixture preparation part (milk preparation pod 4) for preparing the mixture (milk M) by adding the liquid L heated in step 1), the mixture preparation part (milk preparation pod 4) Inside, the mixture raw material (powdered milk PM) and the liquid L are rotated and mixed, and the mixture preparation unit (milk adjustment pod 4) is blown to the mixture preparation unit (milk preparation pod 4). Cooling unit 30 for cooling the pod 4), a temperature measuring device (Thermistor TM) for detecting the temperature of the mixture (milk M) inside the mixture preparation unit (milk preparation pod 4), and the rotating mechanism (stirring) Control child 4a) The control unit 7 changes the rotation of the rotation mechanism (stirring bar 4a) according to the temperature of the mixture (milk M) detected by the temperature measuring device (thermistor TM). It is characterized by letting. Note that changing the rotation means changing both or one of the rotation speed and the rotation direction.

  According to said invention, a mixture production | generation apparatus is equipped with the liquid heating part which heats the supplied liquid, and the mixture preparation part which adds the liquid heated in the said liquid heating part to the mixture raw material, and prepares a mixture. ing. In this kind of mixture production apparatus, the mixture prepared in the mixture preparation unit is hot, so it needs to be cooled to an appropriate temperature.

  In the present invention, a cooling unit that blows air to the mixture preparation unit and cools the mixture preparation unit is provided, but conventionally, the mixture preparation unit cannot be efficiently cooled only by blowing air to the mixture preparation unit. It was.

  Therefore, in the present invention, a rotation mechanism for rotating and mixing the mixture raw material and the liquid inside the mixture preparation unit is provided. As a result, in addition to the air blowing to the mixture preparing unit, the mixture raw material and the liquid inside the mixture preparing unit are stirred and mixed by the rotation mechanism, so that the mixture can be cooled more efficiently than the cooling only by the air blowing.

  By the way, it has been confirmed by experiments that the rotation by the rotation mechanism cannot be sufficiently quickly cooled if, for example, the rotation is kept constant from the start of hot water supply to the optimal temperature during drinking.

  Therefore, in the present invention, a temperature measuring device that detects the temperature of the mixture inside the mixture preparation unit and a control unit that controls the rotation mechanism are provided, and the control unit detects the mixture detected by the temperature measuring device. The rotation of the rotation mechanism is changed according to the temperature of the motor.

  That is, when the liquid is started to be supplied to the mixture preparation unit, the temperature of the liquid is high and the amount of the liquid is small. Therefore, the rotation of the rotation mechanism is preferably slow. However, since the temperature of the liquid further rises as the amount of liquid inside the mixture preparation section gradually increases, it is preferable to rotate the rotation mechanism at a high speed.

  In addition, by increasing the rotation speed of the rotation mechanism, the contact area between the mixture and the inner surface of the mixture preparation unit and the surface area of the mixture can be increased. As a result, the cooling rate of the mixture can be further increased.

  Therefore, when the mixture preparation unit is cooled by the cooling unit, it is possible to provide a mixture generation device that can shorten the cooling time.

  The mixture generation apparatus (powdered milk preparation apparatus 1A) according to aspect 2 of the present invention is the mixture generation apparatus according to aspect 1, in which the control unit 7 supplies the liquid L heated by the liquid heating unit (heater 12). The mixture preparation unit (milk pod 4) is controlled to increase the rotation speed of the rotating mechanism (stirring bar 4a) as the amount of the mixture (milk M) in the mixture preparation unit 4 increases. After the supply of the liquid L to the (milk adjustment pod 4), the rotation speed of the rotation mechanism (stirring bar 4a) is controlled to be a first set rotation speed set in advance, and the mixture ( It is preferable to perform control so that the first set rotational speed is maintained until the temperature of the milk M) falls below a predetermined value.

  Thereby, as the amount of the mixture inside the mixture preparation unit increases, the rotation speed of the rotation mechanism increases, so that the contact area between the mixture and the inner surface of the mixture preparation unit and the surface area of the mixture can be increased. . For this reason, the cooling rate of the mixture can be increased.

  In addition, since the first set rotation speed is set in advance, it is possible to arbitrarily select the cooling rate of the mixture in the process of cooling the mixture after the liquid supply is completed. For example, when it is desired to cool quickly, the first set rotational speed may be set high, and when it is desired to cool relatively slowly, the first set rotational speed may be set low.

  Therefore, the mixture production | generation apparatus which can cool the mixture inside a mixture preparation part efficiently can be provided. Also, the cooling rate of the mixture can be adjusted.

  The mixture generation apparatus (powdered milk preparation apparatus 1B) according to aspect 3 of the present invention is the mixture generation apparatus according to aspect 1, in which the control unit 7 supplies the liquid L to the mixture preparation unit (milk preparation pod 4). After completion of the above, it is preferable to control so that the rotation speed is gradually decreased after the rotation speed of the rotation mechanism (stirring bar 4a) is kept constant for a predetermined time.

  Thereby, since the wave | undulation and splash during cooling of the produced | generated mixture can be reduced, content of a bubble can be reduced in a finished mixture.

  The mixture generation apparatus (powdered milk preparation apparatuses 1A and 1C) according to aspect 4 of the present invention is the mixture generation apparatus according to aspects 1 to 3, wherein the cooling unit 30 includes an intake port 31 for taking in air and a fan for blowing air. (Fan 32), air duct 33a that guides the wind from the fan for blowing (fan 32) to the mixture preparation unit (milk pod 4), and the air passing through the mixture preparation unit (milk pod 4) An exhaust duct 33b led to an exhaust port 34 provided above the preparation unit (milk conditioning pod 4), and the control unit 7 controls the rotation mechanism (stirring) with respect to the direction of the air flow by the blower fan. It is preferable to control the rotation direction of the rotation mechanism (stirring element 4a) so that the rotation direction of the element 4a) faces each other.

  Thereby, the wind speed which hits the liquid level of the mixture under stirring increases to what added the wind speed of the airflow by the fan for ventilation to the rotational speed of a rotation mechanism. For this reason, heat exchange between the liquid level of the mixture and the airflow generated by the blowing fan is promoted.

  In addition, the airflow slightly generated by stirring the mixture and the airflow generated by the air blowing fan collide with each other, disturbing the air inside the mixture preparation unit and sending it upward of the mixture preparation unit. The air above the mixture preparation unit merges with the airflow generated by the blower fan and is sequentially sent to the exhaust duct. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between the mixture and air is promoted, and the mixture can be cooled more quickly.

  The mixture generation apparatus (powdered milk preparation apparatus 1C) according to aspect 5 of the present invention is the mixture generation apparatus according to aspect 1, wherein the control unit 7 is configured such that the liquid L heated by the liquid heating unit (heater 12) is Control is performed so that the rotation speed of the rotating mechanism (stirring bar 4a) becomes the second set rotation speed set in advance from the start of the supply to the mixture preparation unit (milk preparation pod 4) until the end of the supply. After the supply of the liquid L, it is preferable that the rotation speed of the rotation mechanism is set in advance and controlled to be a third set rotation speed that is higher than the second set rotation speed.

  Thereby, bubbles generated in the mixture at the initial stage of hot water supply can be reduced, and heat exchange between the mixture and air can be promoted after the hot water supply is completed, and the mixture can be cooled quickly.

  The mixture production | generation apparatus (powdered milk preparation apparatus 1D) in aspect 6 of this invention is the mixture production | generation apparatus in aspect 1, The said control part 7 is the said liquid L heated by the said liquid heating part (heater 12). The rotation direction of the rotating mechanism (stirring bar 4a) and the blowing direction from the cooling unit 30 are in the same direction from the start of supply to the mixture preparation unit (milk preparation pod 4) until the end of supply. In addition, the rotation direction of the rotation mechanism (stirring element 4a) is controlled, and the rotation direction of the rotation mechanism (stirring element 4a) and the blowing direction from the cooling unit 30 face each other after the supply of the liquid is completed. Thus, the rotation direction of the rotation mechanism (stirring bar 4a) can be controlled.

  This reduces the collision between the stirred mixture and the hot air removed by the blowing fan from the beginning of the supply of liquid to the mixture preparation unit until the supply is completed, and the generated bubbles can be reduced. Become. In addition, since the liquid is in a co-current mixing state from when the liquid starts to be supplied to the mixture preparation unit until the supply is finished, the air blowing fan blows even a highly concentrated and sticky mixture with little liquid. The hot air removed by the rotation can assist the rotation of the rotation mechanism.

  As a result, the mixture can be mixed by the reliable rotation of the rotation mechanism. Moreover, after the hot water supply is completed, the cocurrent mixing state becomes a countercurrent mixing state, and heat exchange between the mixture and air can be sufficiently promoted. Therefore, the mixture can be efficiently cooled.

  The mixture production | generation apparatus (powdered milk preparation apparatus 1F) in aspect 7 of this invention is the mixture production | generation apparatus in aspect 1-6, The liquid L supplied to the said mixture preparation part (milk preparation pod 4) is the said. It is preferable to supply along the inner wall side surface of the mixture preparation section (milk preparation pod 4).

  Thereby, since the liquid is gently supplied to the mixture preparation unit, the mixture is less likely to be splashed or swelled. For this reason, the production | generation of the bubble of a mixture is reduced.

  The mixture production | generation apparatus (powdered milk preparation apparatus 1G) in aspect 8 of this invention is the mixture production | generation apparatus in aspect 1-3, The said cooling part 40 is a fan for ventilation (fan 42), and a fan for ventilation ( The air duct 43 that guides the wind from the fan 42) to the mixture preparation unit (milk preparation pod 4) and the wind that has passed through the mixture preparation unit (milk preparation pod 4) are used as the mixture preparation unit (milk adjustment pod 4). ) And an exhaust duct 44 led to an exhaust port 44b provided on the upper side, and the liquid L heated by the liquid heating unit (heater 12) is discharged into the exhaust duct 44 and the mixture. It is characterized in that it flows into the preparation unit (milk conditioning pod 4).

  As a result, an air flow is generated in the mixture preparation unit, and hot air is attracted from the inside of the mixture preparation unit and is easily removed. As a result, heat dissipation from milk by convection is promoted. Further, the liquid heated in the liquid heating unit is discharged through the exhaust duct or in the exhaust duct and flows into the mixture preparation unit. For this reason, when hot water supplied from the liquid heating section passes through the exhaust duct, heat exchange with the wind passing through the exhaust duct sent from the blower fan is promoted. Therefore, the temperature of hot water supplied into the mixture preparation unit can be lowered.

  The mixture generation apparatus (powdered milk preparation apparatus 1G) according to aspect 9 of the present invention is the mixture generation apparatus according to aspect 8, in which the control unit 7 rotates the rotation direction with respect to the direction of air flow by the blower fan (fan 42). The rotation direction of the rotation mechanism (stirring bar 4a) is controlled so that the rotation direction of the mechanism (stirring bar 4a) faces each other.

  Thereby, by making the rotation direction of the said rotation mechanism and the direction of the airflow by ventilation of the ventilation fan face oppositely, while making it easier to cool milk, inclusion of bubbles can be reduced.

  That is, the rotational speed of the rotating mechanism and the direction of the airflow generated by the blowing fan are opposed to each other, so that the wind speed hitting the liquid level of the milk being stirred becomes the rotational speed of the rotating mechanism. It increases to the thing which added the wind speed of the air current by. In addition, it is possible to take a sufficient path for the wind and milk to contact. As a result, heat exchange between the milk liquid level and the airflow generated by the blowing fan is promoted. Moreover, the hot air in the mixture preparation unit merges with the air flow generated by the blowing fan, and is sequentially sent to the exhaust duct inlet. As a result, the removal of steam and hot air generated during mixing is promoted. Therefore, heat exchange between milk and air is promoted, and milk can be cooled more quickly.

  In addition, since the rotation direction of the rotating mechanism and the direction of the airflow generated by the blowing fan are opposed to each other, the airflow generated by the blowing fan collides with bubbles on the liquid level of the milk and applies pressure to the bubbles. At the same time, by moving the bubbles, friction between the bubbles is generated, and the bubbles are likely to be flipped. Therefore, the defoaming of the bubbles generated during the mixing is promoted.

  The mixture generation apparatus (powdered milk preparation apparatus 1I) according to aspect 10 of the present invention is the mixture generation apparatus according to aspect 8 or 9, wherein the inlet of the exhaust duct 44 (exhaust duct inlet 44a) is the mixture preparation unit (for milk preparation). It is provided in the pod 4).

  Thereby, the path | route with which the wind and milk sent into the mixture preparation part from the ventilation duct exit by the ventilation fan contact can be taken more fully. As a result, heat exchange between the milk liquid level and the airflow generated by the air blowing fan and the defoaming of bubbles generated in the milk are promoted.

  Therefore, the bubble content is small, and the milk M can be cooled to the temperature of drinking more quickly.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

  The present invention relates to a powdered milk preparation device or a mixture production device such as a liquid extraction device such as coffee or tea that can comply with an appropriate milk preparation method and can automatically prepare milk in a short time without using cooling water or the like. Applicable. Specifically, it can be used for heating and cooling of sanitary beverages, in particular, cooling of hot milk after preparation to an appropriate temperature and production of milk with a reduced content of bubbles.

1A Powdered milk preparation device (mixture production device)
1B Milk powder preparation device (mixture production device)
1C Powdered milk preparation device (mixture production device)
1D powdered milk preparation device (mixture production device)
1F Powdered milk preparation device (mixture production device)
1G Powdered milk preparation device (mixture production device)
1H Powdered milk preparation device (mixture production device)
1I Powdered milk preparation equipment (mixture production equipment)
2 Main unit
3 Container 3a Water supply valve
4 Milking Pods
4a Stir bar (rotating mechanism)
4b Opening 5 Motor (rotating mechanism)
6 Operation panel 7 Control unit 10 Supply piping 11 Float check valve
12 Heater 13 Watering nozzle
20 Funnel 30 Cooling unit 31 Inlet port 32 Fan (fan for blowing air)
33 Duct 33a Air duct 33b Exhaust duct 33c Space 34 Exhaust port 40 Cooling unit 41 Air intake port 42 Fan (fan for blowing)
43 Air duct 43a Air duct outlet 44 Exhaust duct 44a Exhaust duct inlet 44b Exhaust port 44c Duct return part L Liquid M Milk PM Powdered milk TM Thermistor

Claims (10)

In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism in accordance with the temperature of the mixture detected by the temperature measuring device , and the mixture of the mixture preparation unit accompanying the supply of the liquid heated by the liquid heating unit. Control to increase the rotation speed of the rotation mechanism as the amount increases,
After completion of the liquid supply to the mixture preparation unit, the rotation speed of the rotation mechanism is controlled to be a first set rotation speed set in advance, and the temperature of the mixture is reduced to a predetermined value or less. It controls so that a 1st setting rotational speed may be maintained, The mixture production | generation apparatus characterized by the above-mentioned . In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism in accordance with the temperature of the mixture detected by the temperature measuring device, and after the liquid supply to the mixture preparation unit is finished, the rotation speed of the rotation mechanism is set to a predetermined value. The mixture generating apparatus is controlled so as to gradually decrease the rotational speed after being held constant for a period of time . The cooling unit includes an air intake port for taking in air, a fan for blowing air, an air duct for guiding the air from the fan for blowing air to the mixture preparation unit, and the air passing through the mixture preparation unit above the mixture preparation unit. An exhaust duct leading to the provided exhaust port,
3. The mixture according to claim 1, wherein the control unit controls a rotation direction of the rotation mechanism so that a rotation direction of the rotation mechanism is opposed to a direction of an air flow by the blower fan. 4. Generator. In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism according to the temperature of the mixture detected by the temperature measuring instrument ,
The cooling unit includes an air intake port for taking in air, a fan for blowing air, an air duct for guiding the air from the fan for blowing air to the mixture preparation unit, and the air passing through the mixture preparation unit above the mixture preparation unit. An exhaust duct leading to the provided exhaust port,
The said control part controls the rotation direction of the said rotation mechanism so that the rotation direction of the said rotation mechanism may oppose with respect to the direction of the airflow by the said air blower fan, The mixture production | generation apparatus characterized by the above-mentioned . In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism in accordance with the temperature of the mixture detected by the temperature measuring instrument , and supplies the liquid heated by the liquid heating unit after being supplied to the mixture preparation unit. Until the rotation is completed, the rotation speed of the rotation mechanism is controlled to be a preset second rotation speed,
After completion of the supply of the liquid, the mixture generating apparatus is controlled so that the rotation speed of the rotation mechanism is set in advance and becomes a third set rotation speed larger than the second set rotation speed . In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism in accordance with the temperature of the mixture detected by the temperature measuring instrument , and supplies the liquid heated by the liquid heating unit after being supplied to the mixture preparation unit. Until the rotation of the rotation mechanism is controlled so that the rotation direction of the rotation mechanism and the air blowing direction from the cooling unit are the same.
After completion of the liquid supply , the mixture generating apparatus controls the rotation direction of the rotation mechanism so that the rotation direction of the rotation mechanism and the air blowing direction from the cooling unit face each other .   The mixture generator according to claim 1, wherein the liquid supplied to the mixture preparation unit is supplied along an inner wall side surface of the mixture preparation unit. In a mixture generating apparatus comprising: a liquid heating unit that heats a supplied liquid; and a mixture preparation unit that prepares a mixture by adding the liquid heated in the liquid heating unit to the mixture raw material,
A rotation mechanism that rotates and mixes the mixture raw material and the liquid inside the mixture preparation unit;
A cooling unit that blows air to the mixture preparation unit to cool the mixture preparation unit;
A temperature measuring device for detecting the temperature of the mixture inside the mixture preparation unit;
A control unit for controlling the rotation mechanism,
The control unit changes the rotation of the rotation mechanism according to the temperature of the mixture detected by the temperature measuring instrument ,
The cooling unit guides a wind fan, a blow duct that guides the wind from the blow fan to the mixture preparation unit, and a wind passing through the mixture preparation unit to an exhaust port provided above the mixture preparation unit. With an exhaust duct,
The liquid heated by the liquid heating unit is discharged through the exhaust duct or discharged from the exhaust duct and flows into the mixture preparation unit .   The said control part controls the rotation direction of the said rotation mechanism so that the rotation direction of the said rotation mechanism may oppose with respect to the direction of the airflow by the said ventilation fan, The mixture production | generation apparatus of Claim 8 characterized by the above-mentioned.   The mixture generating apparatus according to claim 8 or 9, wherein an inlet of the exhaust duct is disposed in the mixture preparation unit.

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