JPH063507Y2 - Frozen gas mixed food dispenser bearing structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bearing structure for a frozen gas mixed food dispenser, and more specifically, for example, a frozen carbon dioxide prepared by cooling a mixed liquid of syrup, water and carbon dioxide while stirring. TECHNICAL FIELD The present invention relates to a bearing structure of a stirring blade arranged in a cooling chamber of a dispenser for producing a beverage.

Conventional technology Frozen carbonated beverages, which are frozen beverages in a foamed state, are sold at fast food stores and coffee shops, and are well received. This frozen carbonated beverage is prepared by mixing the raw material syrup, water, and carbon dioxide gas in a sub-tank provided in a dedicated dispenser, and cooling the mixed solution while stirring with a stirring means in a cooling chamber connected to the refrigeration system. Is obtained by

In this type of dispenser, for example, sake and pressurized gas are supplied into the cooling chamber in addition to the above-mentioned frozen carbonated drink, and the mixture is cooled with stirring by the stirring means provided in the cooling chamber to form a sherbet. Frozen favorite foods can also be manufactured. Since the present invention relates to improvement of a dispenser for producing these frozen carbonated drinks and frozen favorite foods, in the present specification, as a broad concept including the aforementioned frozen carbonated drinks and frozen favorite foods, "frozen gas mixed food" The term will be used to describe a frozen carbonated beverage dispenser as a preferred example thereof.

FIG. 8 shows a schematic process drawing of a frozen carbonated beverage dispenser. In the drawing, carbon dioxide gas in a cylinder 10 is regulated by a regulator 11 and then branched through a check valve 12, Carbon dioxide gas is supplied under pressure into the sub-tank 14 via the solenoid valve 13. The other carbon dioxide gas branched in the middle is pressure-supplied into a syrup tank 15 that stores a syrup serving as a beverage concentrate, and the tank 1
The syrup in 5 is pressure-supplied into the sub tank 14 via the solenoid valve 16 and the flow regulator 17. Water from the external water supply system is supplied to the water storage tank 1 via the water supply valve 18.
After being stored in the tank 9, it is pumped by the pump 20 and supplied into the sub-tank 14.

The syrup, water, and carbon dioxide gas (raw material for frozen carbonated beverages) thus supplied to the sub-tank 14 are mixed in the tank, and the obtained mixed liquid is cooled by the head pressure of the carbon dioxide gas in the sub-tank 14 to the cooling chamber. Communication pipe 22 in 21
Sent through.

As shown in FIG. 9, the cooling chamber 21 is composed of a cylindrical bottomed casing, and the circular opening 21 a has an O-ring 23.
It is hermetically closed by the lid 24 via. An evaporation pipe 25 derived from a refrigeration system (not shown) is wound around the outer periphery of the casing, and a refrigerant from the refrigeration system is passed through the evaporation pipe 25, so that a communication pipe 22 is provided in the cooling chamber 21. The supplied mixed liquid is cooled to the required temperature.

A stirring blade 26 for stirring the mixed liquid is rotatably provided in the cooling chamber 21. That is, the first bearing 27 and the second bearing 28 are arranged and fixed on the inner surface side of the lid body 24 and the casing bottom portion 21b at positions corresponding to the central axis of the cooling chamber 21. Free end 29 of rotating shaft 29 having stirring blade 26 at 27
a is inserted and pivotally supported. The other end of the rotary shaft 29 is inserted into and supported by a second bearing 28 (having a liquid-tight structure with a mechanical seal) and extends to the outside of the room.
It is connected to 0 to apply a required rotation to the stirring blade 26.

Therefore, the mixed liquid in the cooling chamber 21 is
Is cooled while being stirred to produce a frozen carbonated beverage. This frozen carbonated beverage is poured out by opening the pouring cock 31 provided on the lid 24. The complete discharge of the mixed liquid stored in the cooling chamber 21 is achieved by opening the discharge valve 32 branched and connected to the communication pipe 22. Reference numeral 33 in the figure indicates a pressure detection device that detects the pressure in the cooling chamber.

In this type of frozen gas mixed food dispenser, when it is necessary to discharge all the mixed liquid in the cooling chamber 21, as in the case of changing the type of frozen gas mixed food to be poured out,
Only carbon dioxide gas or other pressure gas is introduced into the cooling chamber 21, and the mixed liquid is brought to the communication pipe 22 and the discharge valve 32 at the pressure.
Can be forcibly discharged to the outside through the lid 24
Need not be removed from the cooling chamber 21. Also, when sterilizing and cleaning the cooling chamber 21, the lid 24 is removed by discharging the mixed liquid and introducing the cleaning liquid into the emptied cooling chamber 21 to fill the cleaning liquid and then pressurefully discharging the liquid outside. It is more complete and quicker than disassembling cleaning without exposing to the outside air.

Problems to be Solved by the Invention FIG. 10 is an enlarged view of the structure of the first bearing 27 provided in the cooling chamber 21 of the dispenser described above. The first bearing 27 is fitted and fixed to the lid 24, and the rotary shaft 29 is axially supported by the shaft hole 34 of the bearing 27. At this time, the bottom portion 27a of the bearing 27 and the free end portion 29a of the rotating shaft 29 are
A required gap 35 is inevitably formed between and.
In the manufacturing process of frozen carbonated drink, several
Since a pressure of kg / cm ² is applied, the mixed liquid easily enters the gap 35 and is constantly immersed in the liquid.

The mixed liquid that has entered the gap 35 between the bottom portion 27a of the bearing 27 and the free end portion 29a of the rotary shaft 29 as described above is completely discharged even if carbon dioxide gas is introduced into the cooling chamber 21 to apply internal pressure. The liquid does not escape, and the liquid remains in the gap 35. Therefore, when a new mixed liquid is introduced into the cooling chamber 21 in order to change the type of the frozen gas mixed food, the previous liquid (different type) remaining in the gap 35 is mixed into the new mixed liquid. As a result, there has been an important problem that brings about a change in taste of the frozen carbonated beverage. In addition, when the previously used mixed liquid is discharged and the cooling chamber is cleaned and then the new mixed liquid is introduced, the cleaning liquid remaining in the gap 35 is mixed with this new mixed liquid, and the frozen carbonated drink is also used. It will bring about a change in taste.

Further, when the frozen carbonated drink season is over and the business is closed, the dispenser is thoroughly cleaned and stored for a long time until the next reuse, but at this time, the cleaning liquid remains in the gap 35. , Bringing a change in taste to the frozen carbonated drink that is poured out when the product is resumed. It is also pointed out that if the mixed liquid is discharged from the cooling chamber 21 and then left for a long time without being washed, the mixed liquid remaining in the gap 35 will rot, resulting in corrosion of the bearing portion. Such drawbacks are commonly derived from other frozen gas mixed food dispensers.

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned drawbacks inherent in the bearing portion of the frozen gas mixed food dispenser, and is a bearing facing the cooling chamber of the dispenser. The mixed liquid and the cleaning liquid do not remain in the gap between the parts so that the taste will not change even if the type of frozen gas mixed food is changed, and even if the dispenser is not used for a long period of time, it will be hygienic. An object of the present invention is to provide a new bearing structure that can be immediately used in a normal state.

Means for Solving the Problems In order to overcome the above-mentioned problems and preferably achieve the intended purpose, the present invention provides a cooling chamber for storing a mixer including a raw material liquid and a pressurized gas, and a cooling chamber for storing the mixer. A pair of bearings arranged opposite to each other inside the chamber, a rotary shaft having a free end supported by one bearing and penetratingly supported by the other bearing, and a rotary shaft disposed on the rotary shaft. , A freezing consisting of a stirring blade that stirs the mixed solution in the cooling chamber during its rotation, and a spout cock that is connected to the cooling chamber and that pours out the stirred and cooled mixed solution as a frozen gas mixed food In a gas-mixed food dispenser, attached to the bearing on the side supporting the free end of the rotary shaft,
While extending parallel to this rotation axis, one opening has a pair of long grooves facing each other and communicating with the cooling chamber, and the other opening of the pair of long grooves has a bottom portion of the bearing and the opening. A pair of long grooves and a gap are formed so as to communicate with a gap formed between the rotary shaft and the free end thereof, and a detour that allows the flow of the mixed liquid stored in the cooling chamber is formed. Characterize.

Embodiment Next, the bearing structure of a dispenser for frozen gas-mixed food according to the present invention will be described below with reference to the accompanying drawings as a preferred embodiment of a frozen carbonated drink dispenser.
The same members as those already mentioned will be designated by the same reference numerals.

(Regarding the First Embodiment) FIGS. 1 to 3 show the first embodiment of the present invention, in which the rotary shaft 29 is inserted into and supported by the first bearing 27. , As mentioned above, the shaft free end 29
A gap 35 having a required size is formed between a and the bearing bottom portion 27a.

On the inner peripheral wall surface of the shaft hole portion 34 of the first bearing 27,
As shown in FIGS. 2 and 3, from the opening 27b toward the bottom 27a, along the axial direction of the bearing 27,
A pair of long grooves 36, 36 are formed. This long groove 3
As can be seen from FIG. 3, the reference numerals 6 and 36 are formed so as to face each other by 180 ° with respect to the center of the first bearing 27. The cross-sectional shape of each slot is semicircular as shown in FIG. 3 or V-shaped as shown in FIG. 4 (FIG. 4).
Alternatively, as can be seen from FIG. 5, it can be formed in an inverted channel shape.

The first bearing 27 is attached to the lid 24 that covers the circular opening 21a of the cooling chamber 21, and at this time, the long grooves 36 and 36 extend in parallel with the rotation shaft 29, and
One of the openings is adapted to communicate with the cooling chamber 21. The other opening of the long grooves 36, 36 is
The innermost portion of the shaft hole portion 34 communicates with the gap 35. That is, as shown in FIG. 1, by inserting the rotary shaft 29 into the first bearing 27, the mixed liquid stored in the cooling chamber 21 is inserted between the long grooves 36, 36 and the gap 35 and the rotary shaft 29. A detour 37 that allows circulation is formed. The first bearing 27 according to this configuration needs to adhere to a fixed mounting direction when mounting the first bearing 27 on the lid 24. That is, the first bearing 27 is arranged such that the long grooves 36, 36 thereof are aligned in a vertical relationship as shown in FIG.

(Regarding Second Embodiment) Next, FIGS. 6 and 7 show a second embodiment of the present invention. In this embodiment, the long groove is formed outside the first bearing 27. For example, the first bearing 27 is embedded and fixed in the lid body 24 as described above, but in this case, the pair of long grooves 38, which are vertically arranged on the inner peripheral wall surface of the bearing housing hole portion 24a formed in the lid body 24, 38 are formed to face each other. These long grooves 38, 38 extend along the longitudinal direction of the bearing when the first bearing 27 is inserted and fixed in the bearing accommodating hole 24a, and a passage 39 communicating with the gap 35 at the innermost portion thereof. ，
Have 39. Therefore, the detour 37 in the present embodiment
Is a pair of long grooves 38, 38, a gap 35 formed between the bearing bottom portion 27a and the shaft free end portion 29a, and the gap 3 described above.
5 and the long grooves 38, 38 are respectively constituted by passages 39, 39 communicating with each other.

Operation of Embodiment Next, the operation of the bearing structure according to the embodiment of the present invention will be described. In order to discharge the mixed liquid stored in the cooling chamber 21, the supply of water and syrup to the cooling chamber 21 is stopped, the solenoid valve 13 is opened, and only carbon dioxide gas is introduced into the chamber. When the spout cock 31 is opened in this state, the communication pipe 2
Due to the carbon dioxide gas pressure from 2, the mixed liquid in the cooling chamber 21 is extruded from the cock 31 to the outside, so that the liquid level in the cooling chamber 21 is lowered. When the liquid level reaches the upper long groove 36 of the first bearing 27, carbon dioxide gas penetrates into the gap 35 along the long groove, and the gas pressure thereof pushes down the liquid remaining in the gap 35. Reach When the liquid level further lowers and reaches the position of the lower long groove 36, the liquid all flows out to the cooling chamber 21 side through the lower long groove 36.

When the liquid level further decreases and the liquid is no longer discharged from the pouring cock 31, when the cock 31 is closed, carbon dioxide gas is continuously supplied into the cooling chamber 21. When pressure is applied to the cooling chamber 21 to some extent, the electromagnetic valve 13 is closed to stop the supply of carbon dioxide gas, and then the discharge valve 32 is opened, so that the liquid in the cooling chamber 21 is applied to the inside of the chamber. Due to the carbon dioxide pressure that had been released, all of it was discharged. This behavior is
The same applies to the case of the second embodiment.

As described above, in the bearing structure of the frozen gas mixed food dispenser according to the present invention, a pair of long grooves having one opening communicating with the cooling chamber is attached to the bearing on the side supporting the free end of the rotary shaft. Are formed opposite to each other, and the other opening of the pair of long grooves is made to communicate with a gap formed between the bottom portion of the bearing and the free end portion of the rotary shaft. The gap and the gap form a bypass that allows the mixed liquid stored in the cooling chamber to flow.
Therefore, when the liquid in the cooling chamber is forcibly discharged by the pressure of the carbon dioxide gas or other pressurized gas, the liquid remaining in the gap formed between the bearing and the rotating shaft is not removed in the presence of the bypass. It is completely discharged. Therefore, in order to change the type of frozen gas mixed food, even when the mixed liquid used in the previous use is discharged from the cooling chamber and the new mixed liquid is introduced into the cooling chamber after cleaning with the cleaning liquid. , The cleaning liquid will not be mixed in the new mixed liquid. In addition, the taste of the frozen gas-mixed food that is poured does not change.

Furthermore, even if the liquid mixture is drained from the cooling chamber and then left for a long time without being washed, the liquid remaining in the gap will rot and cause bearing corrosion as in the conventional case. At the same time, the drawbacks such as the taste change of the frozen gas mixed food are eliminated. Therefore, even if the dispenser is not used for a long time, there is an advantage that the use can be immediately started in a hygienic state.

[Brief description of drawings]

FIG. 1 is a cross sectional view of a bearing structure according to the first embodiment,
The figure is a cross-sectional view of a bearing used in the structure shown in FIG.
3 is a front view of the bearing shown in FIG. 2, FIGS. 4 and 5 are partial front views of another embodiment of the bearing used in the structure shown in FIG. 1, and FIG. 6 respectively. Is a cross-sectional view of the bearing structure according to the second embodiment, FIG. 7 is a front view of the bearing structure shown in FIG. 6, FIG. 8 is a schematic process drawing in a frozen carbonated drink dispenser, and FIG. FIG. 10 is a longitudinal sectional view of a cooling chamber used in a frozen carbonated beverage dispenser, and FIG. 10 is an enlarged sectional view of a bearing structure according to a conventional technique. 14 ... Sub tank, 21 ... Cooling chamber 24 ... Lid, 26 ... Stirring blade 27 ... First bearing, 27a ... Bearing bottom 27b ... Bearing opening, 28 ... Second bearing 29 ... Rotating shaft, 29a ... Rotating shaft free end 31 ... Pour out cock, 34 ... Shaft hole portion 35 ... Gap, 36 ... Long groove

Claims (5)

[Scope of utility model registration request] 1. A cooling chamber (21) for storing a mixed liquid consisting of a raw material liquid and a pressurized gas, and a pair of bearings (27, 28) arranged inside the cooling chamber (21) so as to face each other. A rotary shaft (29) whose free end (29a) is supported by one bearing (27) and is penetratingly supported by the other bearing (28), and which is disposed on this rotary shaft (29). The stirring blade (26) that stirs the mixed solution in the cooling chamber (21) at the time of its rotation, and the cooling chamber (21) are connected to the stir-cooled mixed solution as a frozen gas mixed food. In a frozen gas mixed food dispenser consisting of a pouring cock (31) for pouring, a bearing (2) that supports the free end portion (29a) of the rotating shaft (29).
Along with 7), the pair of long grooves (36, 36, 38, 38) extending parallel to the rotation shaft (29) and having one opening communicating with the cooling chamber (21) face each other. The other opening in the pair of long grooves (36, 36, 38, 38) is a bottom portion (27a) of the bearing (27) and a free end portion (29a) of the rotating shaft (29). To communicate with the gap (35) formed between the two, by the pair of long grooves (36,36,38,38) and the gap (35),
A bearing structure for a frozen-gas-mixed food dispenser, which is configured to form a bypass (37) that allows the mixed liquid stored in the cooling chamber (21) to flow. 2. The pair of long grooves (36, 36) are provided in the bearing (27).
The utility model registration claim 1 which is bored opposite to the shaft hole (34) of the bearing and extends from the opening (27b) of the bearing (27) toward the bottom (27a). A bearing structure for the frozen gas mixture food dispenser described. 3. A bearing (27) having a pair of long grooves (36, 36) facing a shaft hole portion (34) so that the long grooves (36, 36) are vertically arranged. The bearing structure for a frozen gas mixed food dispenser according to claim 2, wherein the utility model registration is provided in the cooling chamber (21). 4. The pair of long grooves (38, 38) are provided in the bearing (27).
Frozen gas mixed food according to claim 1, wherein the cooling chamber lid (24) in which is installed is provided so as to face the cooling chamber lid and extends in the longitudinal direction of the bearing (27). Bearing structure of dispenser. 5. The refrigeration system according to claim 4, wherein the pair of long grooves (38, 38) are formed in the lid (24) of the cooling chamber (21) in a vertical relationship so as to have a vertical relationship. Bearing structure for gas mixed food dispenser.