JP3402456B2 - Dispensing unit structure of ice confectioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for dispensing frozen desserts such as ice cream and yogurt, and more particularly to improving the structure of the dispensing portion.

[0002]

2. Description of the Related Art Conventionally, an ice cream dispenser as shown in FIG. 7 is known. This is because a pouring cylinder 102 accommodating an ice cream pack B is mounted vertically on the back side of a door 101 of a freezer compartment 100 in which cold air is circulated and supplied, while a cock 103 is provided on the surface of the door 101. The pouring part 1 in which the inner pipe 105 of the double pipe is provided in communication with the back side of the pouring passage 104 fitted with
06 is attached, and its inner tube 105 is connected to the outlet C of the pack B, so that the piston 107 is raised to compress the pack B and the cock 103 is opened so that the ice cream is sequentially poured out. Has become. Here, when the cock 103 is closed to stop the pouring, a part of the ice cream pushed out from the outlet C of the pack B remains in the inner pipe 105, and if left unattended, the ice cream warms up. There is a risk of being melted. Therefore, conventionally, as described above, the inner pipe 105 has a double pipe structure.
The inside of the inner pipe 105 is cooled by guiding cold air inside the chamber.

[0003]

However, in the conventional one, since the outer pipe 108 is cooled by the introduced cold air in the refrigerator, and so to speak, the cool air is guided to the inside of the pouring portion 106, the outer pipe 108 is also included. There is a problem that dew condensation is likely to occur on the surface of the pouring portion 106. The present invention has been completed based on the above circumstances, and an object thereof is to suppress a temperature rise of a pouring path and dew condensation of a pouring portion.

[0004]

As means for achieving the above object, a structure of a pouring portion of a frozen dessert dispensing device according to the invention of claim 1 is a cooling system in which a frozen dessert cylinder is equipped. There is a pouring passage with an on-off valve on the outer surface of the storage
A synthetic resin block-shaped spout is provided.
A concave hole communicating with the above-mentioned pouring passage is provided on the inside surface of the pouring part.
The discharge of the pouring cylinder is done by drilling
By connecting the connection pipe connected to the side detachably,
It is characterized in that a closed air insulating space is formed around the connecting pipe . A second aspect of the present invention is characterized in that, in the first aspect, the air insulating space is in a vacuum state.

[0005]

[Action and Effect of the Invention] connecting pipe is a pouring path for frozen dessert <invention of claim 1> is thermally insulated from the external heat by air insulation space around it, the connecting tube is prevented from rising temperature. In addition, the structure is such that cold air in the cold storage is not introduced into the pouring part, and the cold heat on the connecting pipe side is difficult to be transferred to the outer surface side of the pouring part by the air insulation space, so the outer surface of the pouring part should be cooled. The occurrence of dew condensation due to is effectively prevented. <Invention of Claim 2> By making the air heat insulating space a vacuum, a higher heat insulating effect can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an ice cream dispenser will be described below with reference to the accompanying drawings. <First Embodiment> A first embodiment of the present invention will be described with reference to FIGS.
Will be described. First, the overall structure of the ice cream dispenser will be described with reference to FIG. Reference numeral 1 is a freezer consisting of a heat-insulating box in which a freezer compartment 2 is formed.
A heat-insulating door 3 that can be opened and closed by swinging is provided on the front surface, and a machine room 5 is provided on the bottom surface, and legs 6 are provided at four corners.
Supported by. On the ceiling of the freezer compartment 2, a machine room 5
The refrigerator 8 connected to the refrigerator 7 provided in the refrigerator and the internal fan 9 are equipped, and the internal air sucked through the duct 10 provided in the deep surface of the freezer compartment 2 cools the refrigerator. While heat is exchanged while passing through 8, cold air is generated, and the cold air is circulated and supplied into the freezer compartment 2 by the internal fan 9, whereby the inside of the freezer compartment 2 is in a state where the ice cream A can be poured out. The cooling temperature is maintained so that it can be stored by cooling.

On the back side of the heat insulating door 3, a pouring cylinder 12 is provided.
Is vertically mounted and tiltably attached via a link mechanism (not shown). A piston 13 is tightly and freely slidably fitted in the pouring cylinder 12, the working fluid is a brine (antifreeze) X, and the pack accommodation chamber 16 is on the upper surface side of the piston 13 and the brine is on the lower surface side. The pressure chambers 17 for supplying and discharging X are formed respectively. A vertical U-shaped groove 18 is cut from the upper edge of the wall surface of the dispensing cylinder 12 corresponding to the heat insulating door 3, and the pack storage chamber 16
An elastic pack B containing ice cream A can be housed therein, with its outlet C fitted in the U groove 18, and a lid 19 can be attached to and detached from the top opening of the pack housing chamber 16. It is covered. A pouring portion 31 to be described later in detail is provided on the outer surface of the upper side of the heat insulating door 3, and a connecting pipe 32 protruding horizontally from the back side of the pouring portion 31 penetrates the heat insulating door 3. Then, it projects to the inner surface side, and the inward projecting end is connected to the outlet C of the pack B.

A brine X is provided on the bottom of the freezer compartment 2 on the back side.
A tank 25 that stores the water is installed, and the tank 25 and the bottom surface of the pressure chamber 17 in the pouring cylinder 12 are connected by a brine flow path 26, and a reversible pump 27 is provided in the middle thereof. It is housed in the machine room 5. Therefore, when the pump 27 is driven in the forward direction, the brine X in the tank 25 is supplied into the pressure chamber 17 as shown by the solid arrow in FIG. 1, while the pump 27 is driven in the reverse direction. As shown by the dashed arrow in the figure, the brine X in the pressure chamber 17 is sucked and returned to the tank 25 side.

Next, the structure of the disposing portion of the spout 31 will be described in detail with reference to FIG. The pouring part 31 in the heat insulation door 3
A through hole 34 is formed at the position where is opened in the refrigerator. The spout 31 is formed of a synthetic resin material in a block shape, and is detachably attached to the above-mentioned attachment position by screwing or the like. Pour out part 3
1, a pouring passage 35 is formed in a vertical direction, and a valve body 37 having two O-rings 36 fitted on its outer periphery is tightly fitted in the pouring passage 35 so as to be vertically movable. And a cock 2 rotatably supported on the outer surface upper side of the pouring portion 31.
It is connected with 3. A cap 40 having a spout 39 is detachably screwed to the lower end of the spout passage 35.

On the lower end side of the back surface of the pouring portion 31, a boss portion 43 into which an O-ring 42 is fitted is projected. A circular concave hole 44 is bored in the boss portion 43, and a mounting hole 45 having a reduced diameter is formed on the inner surface of the boss portion 43 via a taper portion, and the communicating portion having a further stepped diameter is formed on the inner surface thereof. A port 46 is formed and communicates with the lower end side of the pouring passage 35. Connection pipe 3
2 is formed of a stainless steel pipe or the like, the base end side (right side of FIG. 2) of which can be fitted into the mounting hole 45, and an O-ring 48 is fitted to the outer periphery thereof. Connection pipe 3
The tip side of 2 is expanded in diameter so that the outlet C of the pack B can be fitted inside. A flange 50 is formed on the outer periphery of the connecting pipe 32 so as to be in close contact with the surface of the boss 43 of the spout 31.

The base end of the connecting pipe 32 is an O-ring 4.
8 is airtightly fitted into the mounting hole 45 of the spout portion 31 and the flange 50 is in close contact with the surface of the boss portion 43 at this time. As a result, a ring-shaped hermetic seal is formed between the inner surface of the concave hole 44 around the connecting pipe 32, specifically, between the forming position of the flange 50 and the fitting position of the base O-ring 48. The air insulating space 52 is formed. When the pouring portion 31 with the connecting pipe 32 assembled in this manner is attached to the surface of the heat insulating door 3, the boss portion 43 is formed.
Is airtightly fitted into the outer end portion of the through hole 34 of the heat insulating door 3 via the O-ring 42, and the tip end side of the connecting pipe 32 penetrates the through hole 34 with a clearance, and the tip end thereof is placed in the refrigerator. It will be a little protruding.

Next, the operation of the first embodiment will be described. When the pack B is stored in the pack storage chamber 16 with the pouring cylinder 12 tilted, and the pouring cylinder 12 is erected, the outlet C of the pack B is fitted into the tip portion of the connecting pipe 32 and connected. To be done. To pour out the ice cream A, hold a container (not shown) in the hand, insert it below the spout 39, and open the cock 23, and the valve body 37 will move to the raised position shown by the chain line in FIG. The communication port 46 is opened, the pouring switch 29 provided on the operation panel 28 is turned on, the pump 27 is driven in the forward direction, and the brine X in the tank 25 moves to the pressure chamber 1 of the pouring cylinder 12.
7 is supplied and pressurized. This allows the piston 13
Rise and the pack B is compressed, the ice cream A flows out from the outlet C of the pack B, and the connecting pipe 32 and the communication port 4
6 and the lower end of the pouring passage 35, and is poured into the container from the pouring outlet 39. When the cock 23 is closed after the appropriate amount is dispensed, the dispensing switch 29 is turned off to stop the pump 27, and the communication port 46 and the spout 39 are closed to stop the dispensing. By repeating the above, the ice cream A is sequentially poured out.

During this period, when one pouring operation is completed, the ice cream A remains in the connecting pipe 32, and if the inside of the connecting pipe 32 is warmed at this time, the ice cream A will melt and the quality will be deteriorated. It will be. However, in this embodiment, since the air insulating space 52 having poor thermal conductivity is formed around the base end side of the connecting pipe 32 which is easily affected by the external heat, the air insulating space 52 having poor thermal conductivity is formed on the base end side of the connecting pipe 32. Heat is avoided. On the other hand, around the tip side of the connecting pipe 32, the cold air in the refrigerator is cooled by being introduced, and the cold heat on the tip side is also transmitted to the base end side via the peripheral wall, so that the inside of the connecting pipe 32 is full length. The temperature rise in the tube is suppressed by being cooled over.

On the other hand, the structure is such that the cold air in the refrigerator is not directly introduced into the pouring portion 31, and the cold heat on the side of the connecting pipe 32 is less likely to be transmitted to the outer surface side of the pouring portion 31 by the air insulating space 52. Therefore, cooling of the outer surface of the pouring portion 31 is suppressed, and dew condensation is prevented. By further increasing the wall thickness of the peripheral wall of the connecting pipe 32, the inside of the base end portion of the connecting pipe 32 can be cooled more effectively.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIG. Below, the description will be focused on the parts that are different from the first embodiment, and the parts that have the same functions as the first embodiment will be assigned the same reference numerals as appropriate and redundant description will be omitted. In this second embodiment, the connecting pipe 3
The shape of 2A is changed, and the corresponding portion of the connecting hole 32A on the protruding end side of the recessed hole 44 is formed to have the same diameter as the tip side, and the O-ring 55 is formed on the outer periphery of this portion.
Is fitted.

Therefore, in the connecting pipe 32A, the O-ring 48 on the base end side is in close contact with the inner peripheral surface of the mounting hole 45, and the O-ring 55 on the front end side is in close contact with the inner peripheral surface on the front end side of the concave hole 44. It is attached to the pouring part 31. Here, a ring-shaped seal is formed between the fitting position of the O-ring 55 on the distal end side and the fitting position of the O-ring 48 on the proximal end side around the connecting pipe 32A and the inner surface of the concave hole 44. Air insulation space 52A
Is formed. Also in the second embodiment, the same effect as that of the first embodiment can be obtained, and the air heat insulating space 52A is formed between the fitting positions of the front and rear O-rings 55, 48.
More hermeticity can be obtained, and a higher heat insulating effect can be obtained.

<Third Embodiment> FIGS. 4 and 5 show a third embodiment of the present invention. In the third embodiment, the connecting pipe 32
The air insulating space 52B formed around B is made into a vacuum state. Therefore, in the connecting pipe 32B, a male screw 60 cut on the outer periphery of the base end is formed on a female screw 61 cut on the inner periphery of the mounting hole 45 of the spout 31, and a base portion of the equal-diameter portion on the tip side. The cut male screw 62 is respectively screwed to the female screw 63 cut on the inner circumference of the recessed hole 44 on the protruding end side, and the screw 60, 61 on the base end side from the screwing position of the screw 62, 63 on the tip end side. Around the connecting pipe 32B between the screwing positions of the air-insulating space 52B, which is closed and forms an annular shape with the inner surface of the recessed hole 44.
Is formed.

On the other hand, in the lower part of the above-mentioned air insulating space 52B, a stepped mounting hole 6 opening to the lower surface of the spout 31 is provided.
5 is formed and the check valve 70 is attached here. As shown in detail in FIG. 5, the check valve 70 is provided with a bottomed cylindrical main body 71, and the flange 7 is provided on the outer peripheral surface thereof.
2 are provided around the flange 72.
3,74 are cut. Inside the main body 71, O
The valve body 76 to which the ring 75 is fitted is accommodated in a vertically movable manner by fitting a rod 77 protruding from the lower surface thereof into a guide hole 79 of a bottom wall 78 of the main body 71 with a clearance. , The valve body 76 is upwardly urged by the elastic force of the compression coil spring 81 mounted between the lower surface of the valve body 76 and the bottom wall 78, and the O-ring 75 is pressed against the valve seat 82 so that it is always closed. It has become.

In this check valve 70, an O-ring 84 is sandwiched between the upper surface of the main body 71 and the stepped portion 65A of the mounting hole 65, and the upper male screw 73 is cut into the mounting hole 65. 8
By being screwed into the mounting hole 5, it is airtightly mounted in the mounting hole 65. Then, by using the male screw 74 on the lower side of the check valve 70 to connect a connecting pipe drawn out from a vacuum device (not shown) and operate the vacuum device, the valve seat 82 is resisted against the elasticity of the compression coil spring 81. Air insulation space 52 while opening the
The air in B is gradually sucked through the clearance between the rod 77 and the guide hole 79. Air insulation space 52B
Is in a vacuum state (a state close to that), when the operation of the vacuum device is stopped and the connecting pipe is removed, the valve seat 82 is closed due to the external pressure and the elasticity of the compression coil spring 81, and the air insulating space 52B is in a vacuum state. Maintained at.

As described above, according to the third embodiment, the air insulating space 52B formed around the connecting pipe 32B is
Since the vacuum state is further inferior in thermal conductivity, it is possible to obtain a higher heat insulating effect.

<Fourth Embodiment> FIG. 6 shows a fourth embodiment of the present invention. The fourth embodiment should be called a further modified example of the above-described first embodiment. In the following, a description will be given focusing on parts different from the first embodiment, and
Portions having the same functions as those in the embodiment are appropriately denoted by the same reference numerals, and duplicate description will be omitted.

A boss portion 43 protruding from the back surface of the pouring portion 31.
Is formed with a recessed hole 44 at a position slightly eccentric downward, a mounting hole 45 with a reduced diameter is formed on its inner surface, and a communication port 46 with a further reduced diameter is formed on its inner surface. And communicates with the lower end of the pouring passage 35. The connecting pipe 32C is toughened (a hard alumite film is formed on aluminum or an aluminum alloy, and the hard alumite is impregnated with Teflon (registered trademark)).
The shape of the pack B is on the tip side.
Is provided with a connecting portion 90 into which the outlet C is fitted, and an enlarged diameter portion 91 is formed behind the connecting portion 90, and further formed into an outer diameter shape that is reduced in diameter toward the base end in two steps. O-ring 4
8 is fitted. Further, the inner diameter of the connecting pipe 32C is gradually reduced toward the base end. The material of the connecting pipe 32C is aluminum, aluminum alloy,
It may be a good thermal conductor such as copper or silver.

In the connecting pipe 32C, the O-ring 48 at the base end is in close contact with the inner peripheral surface of the mounting hole 45, and the base side of the expanded diameter portion 91 is tightly fitted inside the opening edge side of the concave hole 44. It is assembled in the state. Here, around the connecting pipe 32C between the base portion of the expanded diameter portion 91 and the fitting position of the O-ring 48 at the base end, a closed air insulating space 52C that forms an annular shape with the inner surface of the concave hole 44 is formed. Is formed. Also,
At the inside edge of the through-hole 34 in the heat insulating door 3, the upper edge portion is cut off to form the introduction space 93, and the intake fan 94 is installed on the inside surface of the upper end of the introduction space 93. There is. The lower surface of the intake fan 94 and the connecting pipe 32
It is closed by a closing plate 95 between the upper surface on the tip side of C and a guide plate 96 is provided on the back surface thereof.

As described above, the ice cream A remains in the connecting pipe 32C after one pouring operation is completed.
Since the air insulating space 52C having poor thermal conductivity is formed around the base end side of the connecting pipe 32C, which is easily affected by the external heat, it is possible to prevent external heat from reaching the base end side of the connecting pipe 32C. It In addition, as the intake fan 94 is driven, a part of the cold air in the refrigerator is drawn into the introduction space 93, and as shown by the arrow, after flowing to the inner side on the upper side of the enlarged diameter portion 91 of the connecting pipe 32C, It exhibits a phenomenon that it goes around to the lower side and is returned to the inside of the refrigerator. That is, around the tip side of the connecting pipe 32C, the inside cold air is cooled by being introduced, and the cold heat on the tip side is also transmitted to the base end side through the peripheral wall, so that the inside of the connecting pipe 32C is full length. The temperature rise in the tube is suppressed by being cooled over. In particular, the inner diameter is reduced on the proximal end side and the dimension from the peripheral wall to the center of the tube is reduced, so that the inside of the tube is efficiently cooled. On the other hand, the structure is such that the cold air in the refrigerator is not directly introduced into the pouring part 31, and the connecting pipe 3
The cold heat on the 2C side is also less likely to be transmitted to the outer surface side of the pouring portion 31 by the air insulating space 52C, so that cooling of the outer surface of the pouring portion 31 is suppressed and dew condensation is prevented. .

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. (1) The present invention can be applied to the one using a liquid other than brine as the working fluid of the pouring cylinder, or the one using air. (2) The ice cream referred to in the above embodiment includes both soft ice cream and hard ice cream, and the present invention is directed to general pouring cylinders used for pouring out other frozen desserts such as yogurt and sorbet. It can be widely applied to.

[Brief description of drawings]

FIG. 1 is a sectional view showing an entire structure of an ice cream dispenser according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the pouring mechanism portion.

FIG. 3 is a vertical sectional view of a pouring mechanism portion according to a second embodiment.

FIG. 4 is a vertical sectional view of a pouring mechanism portion according to a third embodiment.

FIG. 5 is an enlarged sectional view of the mounting portion of the check valve.

FIG. 6 is a vertical sectional view of a pouring mechanism portion according to a fourth embodiment.

FIG. 7 is a sectional view of a conventional example.

[Explanation of symbols]

A ... Ice cream B ... Pack C ... Outlet 1 ... Freezer 3 ... Insulation door 12 ... Pour out cylinder 31 ... Pour out part 32 ... Connection pipe 35 ... Pour out passage 37 ... Valve body 39 ... Pour out 43 ... Boss 44 … Concave hole 45… Mounting hole 46
... Communication port 48 ... O-ring 50 ... Flange 52 ... Air insulating space 32A ... Connecting pipe 52A ... Air insulating space
55 ... O-ring 32B ... Connection pipe 52B ... Air insulation space 60 ... Male screw 61 ... Female screw 62 ... Male screw 63
... Female screw 65 ... Mounting hole 70 ... Check valve 32C ... Connection pipe 52C ... Air insulation space

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 10-286066 (JP, A) Japanese Patent Laid-Open No. 4-35619 (JP, A) Japanese Utility Model Laid-Open No. 4-106991 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A23G 1/00-9/30 B67D 1/07 F25D 25/00

Claims (2)

(57) [Claims] 1. A pouring passage with an opening / closing valve is provided on the outer surface of a cooling storage in which a cylinder for pouring frozen desserts is installed.
A synthetic resin block-shaped spout is provided.
A concave hole communicating with the above-mentioned pouring passage is provided on the inside surface of the pouring part.
The discharge of the pouring cylinder is done by drilling
By connecting the connection pipe connected to the side detachably,
A pouring part structure of a frozen dessert pouring device, characterized in that a closed air insulating space is formed around the connecting pipe . 2. The structure of the pouring section of the frozen dessert pouring apparatus according to claim 1, wherein the air insulating space is in a vacuum state.