KR100525976B1 - Icecream machine provided with icecream solution forced supply apparatus - Google Patents

Abstract

In the present invention, the storage tank 10 for storing the ice cream stock solution, the stirring cylinder 20 for stirring the ice cream stock solution supplied from the storage tank 10 with air to the ice cream dispensing nozzle, and around the stirring cylinder 20 In the ice cream maker having an evaporator 40 is installed to supply the refrigerating heat to the ice cream in the stirring cylinder 20, it is installed in the storage tank 10, the ice cream stock solution and air in advance to mix the stirring cylinder 20 is a mixer 200 to discharge into the interior; And a driving source 500 provided at one side of the reservoir 10 to drive the mixer 200, wherein the mixer 200 includes a hollow cylinder 210; A piston 300 moving forward and backward by the drive source 500 in the cylinder 210; And inserted and fixed to the end side of the cylinder 210, corresponding to the forward and backward movement of the piston 300, while providing a passage for sucking the ice cream stock solution and air into the cylinder 210, There is provided an ice cream maker having an ice cream compulsory supply device, characterized in that it comprises a valve body 400 which provides a passage for discharging the ice cream stock solution mixed with air in the cylinder 210 to the outside of the cylinder 210. .

The present invention, by mixing the ice cream stock solution in the reservoir with air in advance in the mixer and then supplied to the stirring cylinder to significantly increase the mixing ratio of the air to the ice cream stock solution to provide a softer ice cream.

Description

Ice cream machine provided with ice cream solution forced supply device {Icecream machine provided with icecream solution forced supply apparatus}

The present invention relates to an ice cream maker having an ice cream compulsory supplying device, and more specifically, by mixing the ice cream stock solution inside the reservoir with air in advance and then supplying it to a stirring cylinder, the mixing ratio of air to the ice cream stock solution is dramatically increased. The present invention relates to an ice cream maker provided with an ice cream stock compulsory supply device for providing a softer ice cream.

An ice cream or soft ice cream maker mixes the ice cream stock with air to incorporate air into the ice cream stock, thereby inflating its properties and producing a soft ice cream.

Conventional apparatus for producing ice cream or soft ice cream is disclosed in Korean Utility Model Registration No. 339934 (2004.01.04, spiral stirrer for ice cream vending machine) registered with the present applicant. The above-mentioned ice cream vending machine or ice cream maker is hereinafter referred to as "ice cream maker".

The ice cream maker disclosed in the publication includes a storage tank in which an ice cream stock solution is stored, a stirring cylinder connected to a lower portion of the storage tank by mixing with air, and an ice cream, a stirring and conveying mechanism provided in the stirring cylinder, and the stirring cylinder. It is installed in the circumference is made of a structure provided with an evaporator for supplying the refrigeration heat to the ice cream inside the stirring cylinder.

In such an ice cream maker, the ice cream stock solution is stored in the reservoir, the stirring cylinder is filled with ice cream stock stored in the reservoir through a supply pipe to a certain level and the remaining portion is filled with air. In the stirring cylinder, the ice cream stock solution and the air are mixed by the stirring and conveying mechanism to make a soft ice cream containing air, and the produced soft ice cream is conveyed to the front of the maker by the stirring and conveying mechanism to be discharged through the nozzle. It is.

In such an ice cream maker, mixing the ice cream stock solution and air in the cylinder is to increase the air content in the stock solution. If a lot of air in the ice cream solution, the ice cream is richer and softer.

Therefore, the ice quality (quality) of the ice cream depends on the over-run of the ice cream stock solution and air. In other words, if the overrun ability is high, it is possible to provide more rich and soft ice cream.

However, in the conventional ice cream maker, since the mixing of the ice cream stock solution and the air is made only in the stirring cylinder described above, there is a disadvantage in that the overrun is not sufficiently made.

The reason is that the stirring and conveying mechanism is designed to simultaneously perform the stirring function and the conveying function. Therefore, the conventional stirring and conveying mechanism cannot exert fundamentally excellent stirring ability, and in addition, it is difficult to sufficiently infiltrate the ice cream stock solution by being conveyed to the front of the stirring cylinder before the ice cream is sufficiently mixed with the air.

The present invention was developed to solve the above problems, an object of the present invention, by mixing the ice cream stock solution inside the reservoir with air in advance and then supplying to the stirring cylinder to significantly increase the mixing ratio of the air to the ice cream stock solution It is to provide an ice cream maker having an ice cream stock solution forced supply device that can provide a softer soft ice cream.

In order to achieve the above object, in the present invention, a storage tank in which the ice cream stock solution is stored, a stirring cylinder for stirring the ice cream stock solution supplied from the storage tank with air to be transferred to the ice cream dispensing nozzle, and a stirring cylinder installed around the stirring cylinder. An ice cream maker having an evaporator for supplying refrigeration heat to an ice cream therein, the ice cream maker comprising: a mixer installed inside the reservoir, the mixer for mixing the ice cream stock solution and air in advance and discharging it into the stirring cylinder; And a driving source provided at one side of the reservoir to drive the mixer, wherein the mixer comprises: a hollow cylinder; A piston moving back and forth by the drive source in the cylinder; And an ice cream stock solution inserted into and fixed to an end side of the cylinder and provided as a passage through which the ice cream stock solution and the air are sucked into the cylinder in response to the forward and backward movements of the piston. It is provided with an ice cream maker having an ice cream stock solution forced supply device comprising a valve body provided as a passage for discharging the outside of the cylinder.

According to the configuration of the present invention, the ice cream stock solution in the reservoir is pre-mixed with air through the mixer and then supplied to the stirring cylinder. Therefore, the air content rate with respect to the ice cream stock solution can be significantly increased, it is possible to provide a more soft and elegant ice cream.

In the ice cream maker according to the present invention, the end of the valve body is inserted into the opening hole formed in the front end of the piston is sealed between the end of the valve body and the inner end of the opening hole volume change by the retraction of the piston An air chamber is formed; An enclosed space isolated from the air chamber, wherein an undiluted liquid chamber is formed between the outer diameter of the valve body and the inner diameter of the cylinder by volume of the piston; A sealed space isolated from the air chamber and the liquid chamber between the outer diameter of the valve body and the inner diameter of the cylinder, the air chamber being connected to the air chamber and the liquid chamber via a predetermined passage, in accordance with the compression action of the piston; A mixing chamber is formed in which the air flowing from the stock solution chamber and the ice cream stock solution are mixed; Discharge port is formed on the side wall of the cylinder corresponding to the mixing chamber in order to transfer the ice cream stock solution mixed with air in the mixing chamber to the stirring cylinder.

The valve body has an air inflow path connecting the air chamber and the outside to introduce external air into the air chamber when the piston is retracted, and is compressed in the air chamber when the piston is advanced. An air injection path connecting the air chamber and the mixing chamber is formed to inject air into the mixing chamber, and when the piston is retracted, the storage tank and the stock solution chamber are introduced to introduce the ice cream stock solution from the reservoir into the stock solution chamber. A stock solution inlet passage is formed, and when the piston is advanced, a stock solution injection passage connecting the stock solution chamber and the mixing chamber is formed to inject the stock solution compressed from the stock solution chamber into the mixing chamber. .

In addition, a bypass passage is formed in the valve body to connect the mixing chamber and the reservoir, and the bypass passage opens the bypass passage to open the bypass passage when the pressure inside the mixing chamber rises by a certain degree or more. It characterized in that the pressure release valve for returning the ice cream stock solution to the reservoir.

In the present invention described above, the air inlet passage and the raw liquid inlet passage is provided with an opening and closing valve for regulating the air inlet passage and the raw liquid inlet passage in accordance with the advancing and returning of the piston, respectively, It is characterized in that the opening and closing valve for controlling the injection of air and stock solution into the mixing chamber as the piston advances and retreats.

Each of the on-off valves provided in the air inlet passage and the raw liquid inlet passage is fitted to the outer diameter portion of the valve body in which the outlets of the air inlet passage and the crude liquid inlet passage are formed, and thus the pressure of the air inlet and the liquid inlet passage is not less than a predetermined pressure. When the action is made of an elastic band having elasticity to be elastically lifted, the opening and closing valve provided in the air injection passage and the feed solution injection passage, the outer diameter portion of the valve body formed the outlet of the air injection passage and the feed injection passage It can be made of an elastic band having elasticity that is elastically lifted when a predetermined pressure is applied from the inside of the air injection passage and the undiluted injection passage.

In addition, the front of the cylinder is connected to the air inlet path of the valve body to the outside, and the connecting member for connecting the stock solution inlet and the bypass passage to the storage tank is installed, the connecting member is the air inlet, the stock solution inlet And first, second, and third insertion portions inserted into the bypass passage, and the first, second, and third insertion portions respectively include air inflow passages, raw liquid inflow passages, and bypass passages. It may be made of a configuration that is formed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic cross-sectional view showing an entire ice cream maker equipped with a stock solution supply apparatus according to a preferred embodiment of the present invention.

As shown in FIG. 1, the ice cream maker includes a storage tank 10 in which an ice cream stock solution 2 is stored, and a stirring cylinder in which air and ice cream are mixed by a supply pipe 12 connected to a lower portion of the storage tank 10. 20), the stirring and conveying mechanism 30 provided in the stirring cylinder 20, and the evaporator 40 installed around the stirring cylinder 20 to supply refrigeration heat to the ice cream inside the stirring cylinder 20. It includes.

In the ice cream maker as described above, the stock solution supply apparatus 100 of the present invention is installed in the storage tank 10, and sucks the ice cream stock solution and the outside air contained in the storage tank 10 before mixing A mixer 200 for discharging the stirring cylinder 20 and a driving source 500 for driving the mixer 200 are included. The ice cream stock solution in the storage tank 10 is introduced into the mixer 200 through the suction pipe 600, and the ice cream stock solution mixed with the air in the mixer 200 is discharged to the stirring cylinder 20 through the discharge pipe 610. do.

2 to 10 show a forced liquid supply device according to the present invention, Figure 2 is a view showing a separate separation of the stock solution supply device, Figure 3a is an assembled front cross-sectional view, Figure 3b shows an assembled top plan view. FIG. 4A shows the left side view of FIG. 3A, and FIG. 4B shows the cap removed from FIG. 4A. 5 is a cross-sectional view taken along line I-I of FIG. 4A, FIG. 6 is a cross-sectional view taken along line II-II of FIG. 4A, FIG. 7 is a cross-sectional view taken along line III-III of FIG. 4A, and FIG. FIG. 9 is a cross-sectional view taken along line V-V of FIG. 3A, and FIG. 10 is a cross-sectional view taken along line VI-VI of FIG. 3A.

As shown in FIGS. 2 to 10, the mixer 200 includes a cylinder 210, a piston 300, and a valve body 400.

The cylinder 210 is formed of a hollow hollow shape, one side is formed with a connection pipe 211 for connecting with the drive source 500, the other side is a stirring cylinder (the ice cream stock solution mixed with air) A discharge port 212 for discharging to 20 is formed.

The piston 300 moves forward and backward by the drive source 500 inside the cylinder 210. Specifically, an opening hole 301 of a predetermined depth is formed in the front end of the piston 300, the groove 302 is formed on the side. The driving source 500 is connected to the recess 302.

In the connection between the driving source 500 and the piston 300, the eccentric shaft 510 extending from the driving source 500 is introduced into the connecting pipe 211 of the cylinder 210 to the end of the eccentric shaft 510. The formed spherical cam 511 is coupled to the groove 302 of the piston 300. Therefore, when the eccentric shaft 510 is rotated by the drive source 500, the spherical cam 511 of the eccentric shaft 510 rotates to reciprocate the piston 300 in the axial direction. In this case, the piston 300 rotates in the cylinder 210 by the rotation radius of the spherical cam 511 and reciprocates in the axial direction.

The valve body 400 is inserted and fixed to the end side of the cylinder 210, and in response to the forward and backward movements of the piston 300, the ice cream stock solution and the air are sucked into the cylinder 210. At the same time, the ice cream stock solution mixed with the air in the cylinder 210 is discharged to the outside of the cylinder 210.

Specifically, the valve body 400, the end thereof is inserted into the opening hole 301 of the piston 300 by a predetermined length. Accordingly, an air chamber 410 is formed between the end portion of the valve body 400 and the inner end portion of the opening hole 301 by changing the volume of the piston 300. In addition, a liquid separation chamber 420 is formed between the outer diameter of the valve body 400 and the inner diameter of the cylinder 210 as a closed space isolated from the air chamber 410. The stock solution chamber 420 changes in volume by advancing and retreating the piston 210.

In addition, a mixing chamber 430 is formed at another side between the outer diameter of the valve body 400 and the inner diameter of the cylinder 210. The mixing chamber 430 is provided as a space in which the air flowing through the air chamber 410 and the stock solution chamber 420 is mixed with the ice cream stock solution according to the compression action of the piston 300. The outlet 212 of the cylinder 210 described above is formed on one side of the mixing chamber 430, the discharge pipe 610 connected to the supply pipe 12 of the stirring cylinder 20 is connected.

As described above, in order to suck the air and ice cream stock solution into the air chamber 410 and the stock solution chamber 420, and to inject the sucked air and ice cream stock solution into the mixing chamber 430, Several passages are formed.

Specifically, the passages include an air inlet 411, an air inlet 412, a stock solution inlet 421, and a stock solution inlet 422.

The air inlet 411 connects the outside of the valve body 400 and the air chamber 410. When the piston 300 is retracted to form a vacuum in the air chamber 410, external air is introduced into the air chamber 410 through the air inlet 411.

The air injection path 412 is formed to connect the air chamber 410 and the mixing chamber 430. When the piston 300 is advanced and pressure is applied to the inside of the air chamber 410 (when the volume is reduced), the air inside the air chamber 410 through the air injection path 412 passes through the mixing chamber ( 430).

The stock solution inlet 421 is formed to connect the reservoir 10 and the stock solution chamber 420. When the piston 300 is retracted and a vacuum is formed in the stock solution chamber 420, the ice cream stock solution of the storage tank 10 flows into the stock solution chamber 420 through the stock solution introduction passage 421.

The stock solution injection passage 422 connects the stock solution chamber 420 and the mixing chamber 430. The raw liquid compressed in the raw liquid chamber 420 by the advance of the piston 300 is injected into the mixing chamber 430 through the raw liquid injection passage 422.

In addition, in the present invention, a bypass circuit is formed from the mixing chamber 430 to the storage tank 10 side. In detail, the bypass circuit includes a bypass passage 431 for connecting the mixing chamber 430 and the storage tank 10 to the valve body 400, and a pressure release valve installed in the bypass passage 431. 432. The pressure releasing valve 432 opens the bypass passage 431 when the pressure inside the mixing chamber 430 rises by a predetermined level or more, and stores the ice cream stock solution in the mixing chamber 430 in the storage tank 10. ) To return to.

In the present invention, as the piston 300 advances, the air flows into the air chamber 410 and the stock solution chamber 420 through the air inlet 411 and the stock solution inlet 421. On-off valves 441 and 442 are provided. In addition, in order to control the injection of air and the stock solution from the air chamber 410 and the stock solution chamber 420 into the mixing chamber 430 as the piston 300 advances, the singer air injection passage 412 and the stock solution The injection passage 422 is provided with another open / close valve 443.

In the present exemplary embodiment, the open / close valves 441, 442 and 443 may be provided at the outlets of the air inlet 411, the feed solution inlet 421, the air inlet 412, and the feed inlet 422. It is made of an elastic band having a blocking elasticity. Of the open / close valves 441, 442 and 443 made of an elastic band having elasticity, the open / close valve 441 is fitted to an outer diameter portion of the valve body 400 in which the outlet of the air inlet 411 is formed. When the pressure is greater than a predetermined pressure from the inside of the air inlet 411, the air inlet 411 is opened elastically, and when the pressure is released, the air inlet 411 is contracted by its own elastic force to block the air inlet 411.

Similarly, the on-off valve 442 is fitted to the outer diameter portion of the valve body 400 in which the outlet of the stock solution inlet 421 is formed to be elastic when a predetermined pressure is applied from the inside of the stock solution inlet 421. The liquid inflow passage 421 is excited to open.

Accordingly, when the piston 300 is retracted, a negative pressure, that is, a vacuum is formed in the air chamber 410 and the stock solution chamber 420, and a relatively high pressure is formed in the stock solution inlet 421. The open / close valves 441 and 442 expand and open. When the piston 300 is moved forward, the pressure of the air chamber 410 and the feed liquid chamber 420 is higher than the pressure in the air inlet 411 and the feed inlet 421, the on-off valve 441 is elastic It is contracted by the restoring force to close the air inlet 411 and the stock solution inlet 421. In addition, when the pressure rises in the air injection passage 412 and the liquid injection passage 422 as the piston 300 moves forward, the on / off valve 443 is expanded and opened by the pressure, and conversely, the piston 300 When retreating, the pressure is lowered in the air injection passage 412 and the liquid injection passage 422, so that the opening / closing valve 443 contracts and closes.

The air chamber 410, the stock solution chamber 420, and the mixing chamber 430 may be sealed by seal members 451, 452, 453, and 454 installed on the outer circumference of the valve body 400.

On the other hand, in the present invention, the connecting member 700 is provided in front of the cylinder (210). The connection member 700 connects the air inflow path 411 of the valve body 400 to the outside, and serves to connect the stock solution inflow path 421 and the bypass path 431 with the storage tank. The connection member 700 has first, second, and third insertion parts 710, 720, and 730 inserted into the air inflow path 411, the stock solution inflow path 421, and the bypass path 431. The first, second and third passages 711, 721, 731 are formed in the second and third insertion portions 710, 720, and 730, respectively, which communicate with the air inflow passage 411, the feed solution inlet passage 421, and the bypass passage 431. Here, only a portion of the first passage 711 protrudes out of the upper portion of the stock solution of the storage tank 10 to form a protrusion 712 for introducing external air. The first passage 711 is formed along the protrusion 712 from the first insertion portion 710.

Accompanying drawings, FIGS. 11A to 13 are views sequentially illustrating a process of mixing the ice cream stock solution with air and supplying the mixture to the stirring cylinder 20 according to the present invention.

First, FIG. 11A is a view showing an initial state before the air and the stock solution are sucked into the cylinder 210 with reference to FIG. 6. As shown in FIG. 11A, in the initial state, the end of the valve body 400 is inserted into the opening hole 301 of the piston 300 as much as possible. Therefore, the volume of the air chamber 410 and the stock solution chamber 420 takes the smallest state. In this state, when the driving source 500 is driven to rotate the eccentric shaft 510, the spherical cam 511 of the eccentric shaft 510 rotates in the direction of the arrow in the drawing.

11B and 11C, the spherical cam 511 is rotated by 180 degrees in the direction of the arrow as described above, and the piston 300 is moved as far as possible from the valve body 40 (retracted state). have. As described above, the spherical cam 511 is inserted into the groove 302 of the piston 300, the piston 300 is free to move and rotate inside the cylinder 210. Therefore, when the spherical cam 511 is rotated with a constant radius of the center of the eccentric shaft 510 as the center of rotation, the piston 300 is the cylinder 210 as much as the rotation radius of the spherical cam 511 It rotates in the axial direction.

As described above, in the process of moving the piston 300 as far as possible from the valve body 400, the volume of the air chamber 410 and the stock solution chamber 420 is also increased, thereby providing the air chamber 410 and the stock solution chamber 420. A vacuum will be formed. As shown in FIG. 11B, the vacuum force generated in the air chamber 410 is an elastic band having an elasticity that blocks the outlet of the air inlet 411 by acting on the air inlet 411, that is, an open / close valve ( 441). Therefore, while the piston 300 is retracted, outside air is introduced into the air chamber 410 through the air inlet 411 to be filled.

In addition, during the retraction of the piston 300, the volume of the liquid chamber 420 is also increased to form a vacuum in the liquid chamber 420, thereby opening and closing the valve blocking the exit of the liquid inlet passage 421. As the 442 is lifted, the ice cream stock solution flows from the reservoir 10. At this time, the ends of the air injection passage 412 and the liquid injection passage 422 also communicate with the air chamber 410 and the liquid injection chamber 420, respectively, and a vacuum force acts on each of them. However, the on-off valve 443 provided at the outlet of the air injection path 412 and the liquid injection path 422 is further in close contact with the outer peripheral surface of the valve body 210 by its elastic restoring force and the vacuum force. The injection passage 412 and the undiluted injection passage 422 are kept closed.

As described above, when the eccentric shaft 510 is further rotated while the piston 300 is retracted as much as possible and the air and the liquid are sucked into the air chamber 410 and the stock solution chamber 420, the eccentric shaft 510 may be rotated. The eccentric cam 511 advances the piston 300 by rotating forward by the locus as shown by the arrows in FIG. 12A. When the piston 300 is advanced, the volume of the air chamber 410 and the stock solution chamber 420 is reduced while the air and the stock solution inside them are compressed. At this time, when the air chamber 410 and the stock solution chamber 420 are compressed, the two opening and closing valves 441 and 442 are in close contact with the outer circumference of the valve body 400 by its elastic restoring force, thereby introducing the air inflow. 410 and the raw liquid inlet 420 is closed. Therefore, the compressed air and the stock solution are extruded only into the air injection passage 412 and the stock injection passage 422, respectively, and are pushed out of the mixing chamber 430 while pushing up the opening / closing valve 443 blocking their outlets. In this way, the air and the stock solution are introduced into the mixing chamber 430 at the same time and mixed with each other to allow air to enter the ice cream stock solution.

In addition, the air in the mixing chamber and the raw liquid or the raw liquid in which the air is mixed, as shown in FIG. 12B, move and find the outlet 212 of the cylinder 210, according to the compression of the piston 300, and the outlet 212. In the) part, more perfect mixing is achieved and it exits. Since the discharge pipe 610 is connected to the discharge port 212 as shown in Figures 1 and 3b, the ice-filled stock solution containing air is stirred through the discharge pipe 610, as shown in Figure 1, a stirring cylinder (20) will be introduced into the interior. In the stirring cylinder 20, the stock solution, in which air has already been filled, is further stirred by the rotation of the stirring and transfer mechanism 30, whereby the air content of the stock solution is further increased.

13 is a view showing a state in which the ice cream stock mixed with air is bypassed to the reservoir (10). A bypass passage 431 is formed at one side of the mixing chamber 430, and a pressure release valve 432 is provided at the bypass passage 431. On the other hand, the compression action of the piston 300 is mechanically made and does not operate selectively by knowing how much ice cream is supplied to the stirring cylinder 20. Therefore, when the ice cream stock solution is excessively supplied to the stirring cylinder 20, the pressure of the stirring cylinder 20 is excessively increased. As the pressure of the stirring cylinder 20 rises, the pressure of the mixing chamber 430 rises as well, and this pressure rise acts as a resistance to the compression action of the piston 300.

As such, while the pressure of the mixing chamber 430 extends to the pressure release valve 432 through the bypass passage 431, the pressure of the mixing chamber 430 is already set to the pressure release valve 432. When the pressure rises above the pressure, the pressure release valve 432 is pushed by the increased pressure. Accordingly, the air in the mixing chamber 430 and the stock solution or the ice cream stock solution containing the air are returned to the storage tank 10 through the bypass passage 431.

Although specific embodiments of the present invention shown in the accompanying drawings have been described in detail above, this is only one example of a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereto. Therefore, the embodiments of the present invention as described above can be variously modified and equivalent other embodiments by those of ordinary skill in the art within the technical spirit of the present invention, such modifications and equivalent other embodiments are It goes without saying that it belongs to the appended claims of the invention.

As described above, the present invention has a structure in which the ice cream stock solution in the reservoir 10 is mixed with air in advance through the mixer 200 and then supplied to the stirring cylinder 20.

In the related art, the mixing of the ice cream stock solution and the air was made only in the stirring cylinder, but the stirring and conveying mechanism of the stirring cylinder was not designed to perform the stirring function and the conveying function at the same time, so that the stirring ability was not sufficiently exhibited.

However, in the present invention, the ice cream stock solution is previously mixed with the air through the mixer, and is stirred again in the stirring cylinder, thereby significantly increasing the air content of the ice cream stock solution. Therefore, a softer and more elegant ice cream can be provided.

1 is a schematic cross-sectional view showing an entire ice cream maker equipped with a forced stock solution supply apparatus according to a preferred embodiment of the present invention.

Figure 2 is a view showing the separation of the forced liquid supply apparatus according to the present invention.

3A is a front sectional view showing the assembled state of the undiluted solution supplying apparatus according to the present invention.

3B is a plan sectional view showing the assembled state of the undiluted solution supplying apparatus according to the present invention.

4A is a left side view of FIG. 3A.

FIG. 4B is a view illustrating the cap removed in FIG. 4A.

5 is a cross-sectional view taken along the line II of FIG. 4A.

FIG. 6 is a II-II cross-sectional view of FIG. 4A.

7 is a cross-sectional view taken along line III-III of FIG. 4A.

8 is a cross-sectional view taken along line IV-IV of FIG. 3A.

FIG. 9 is a cross-sectional view taken along the line VV of FIG. 3A.

FIG. 10 is a VI-VI cross-sectional view of FIG. 3A.

FIG. 11A is a diagram showing an initial state before the air and the stock solution are sucked into the cylinder in the stock solution forced supply device according to the present invention with reference to FIG. 6.

FIG. 11B is a diagram illustrating a process in which air and the stock solution are sucked into the cylinder in FIG. 6 according to the present invention.

FIG. 11C is a diagram illustrating a process of sucking air and stock solution into a cylinder in FIG. 7 according to the present invention.

12A is a diagram illustrating a process of mixing air and the stock solution in FIG. 5 in the stock solution forced supply device according to the present invention.

12B is a view illustrating a process of mixing air and the stock solution in FIG. 7 in the stock solution forced supply device according to the present invention.

FIG. 13 is a view illustrating a state in which a stock solution of ice cream mixed with air is bypassed to a storage tank in FIG. 6 according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: reservoir 12: supply pipe

20: stirring cylinder 30: stirring and conveying mechanism

40: evaporator 100: feed solution

200: mixer 210: cylinder

211 connector 212 outlet

300: piston 301: opening hole

302: groove 400: valve body

410: air chamber 411: air inlet

412: Air injection path 420: Liquid chamber

421: Stock infusion 422: Stock infusion

430: mixing chamber 431: bypass passage

432: pressure release valve 441,442,443: on-off valve

451, 452, 453, 454: sealing member

500: driving source 510: eccentric shaft

511: old cam 600: suction tube

610: discharge pipe 700: connection member

710: first insertion unit 711: first passage

712: protrusion 720: second insertion portion

721: second passage 730: third insertion portion

731: third passage

Claims (7)

A storage tank for storing the ice cream stock solution, a stirring cylinder for stirring the ice cream stock solution supplied from the reservoir with air to the ice cream dispensing nozzle, and an evaporator installed around the stirring cylinder to supply cooling heat to the ice cream inside the stirring cylinder. In the equipped ice cream maker, A mixer installed inside the reservoir, for mixing the ice cream stock solution and air in advance and discharging it into the stirring cylinder; And Is provided on one side of the reservoir includes a drive source for driving the mixer, The mixer, Hollow cylinder; A piston moving back and forth by the drive source in the cylinder; And It is inserted and fixed at the end side of the cylinder and provided as a passage through which ice cream stock solution and air are drawn into the cylinder in response to the forward and backward movements of the piston, and at the same time, An ice cream maker having an ice cream compulsory supplying device, comprising a valve body provided as a passage for discharging outside the cylinder. The method of claim 1, The end of the valve body is inserted into the opening hole formed in the front end of the piston is formed between the end of the valve body and the inner end of the opening hole is formed a closed air chamber of the volume change by the retraction of the piston, As a closed space isolated from the air chamber, between the outer diameter of the valve body and the inner diameter of the cylinder is formed an undiluted liquid chamber in which the volume is changed by the retraction of the piston, A sealed space isolated from the air chamber and the liquid chamber between the outer diameter of the valve body and the inner diameter of the cylinder, the air chamber being connected to the air chamber and the liquid chamber via a predetermined passage, in accordance with the compression action of the piston; A mixing chamber is formed in which the air flowing from the stock solution chamber and the ice cream stock solution are mixed. And a discharge port formed on a side wall of the cylinder corresponding to the mixing chamber in order to transfer the ice cream mixed solution mixed with air from the mixing chamber to the stirring cylinder. The method of claim 2, The valve body has an air inflow path connecting the air chamber and the outside to introduce external air into the air chamber when the piston is retracted, and compressed air in the air chamber when the piston is advanced An air injection path connecting the air chamber and the mixing chamber is formed to inject into the mixing chamber, and when the piston is retracted, connecting the storage tank and the stock solution chamber to introduce the ice cream stock solution from the reservoir to the stock solution chamber. A stock solution inlet is formed, and when the piston is advanced, ice cream stock solution is characterized in that the stock solution injection path connecting the stock solution chamber and the mixing chamber to inject the stock solution compressed in the stock solution chamber into the mixing chamber; Ice cream maker having a forced supply device. The method of claim 3, The valve body is provided with a bypass passage connecting the mixing chamber and the storage tank, and the bypass passage opens the bypass passage when the pressure inside the mixing chamber rises by a certain degree or more, and the ice cream inside the mixing chamber. Ice cream maker having a forced supply of ice cream solution, characterized in that the pressure release valve for returning the stock solution to the reservoir. The method of claim 3, The air inlet passage and the raw liquid inlet passage are provided with an opening and closing valve for regulating the air inlet passage and the raw liquid inlet passage as the piston advances and retreats, respectively. And an open / close valve configured to control injection of air and stock solution into the mixing chamber in response to advancing and returning of the piston. The method of claim 5, Each of the on-off valves provided in the air inlet passage and the raw liquid inlet passage is fitted to the outer diameter portion of the valve body in which the outlets of the air inlet passage and the crude liquid inlet passage are formed, and thus the pressure of the air inlet and the liquid inlet passage is not less than a predetermined pressure. When this action is made of elastic band having elasticity to be elastically lifted, The on / off valves provided in the air injection passage and the feed solution injection passage are fitted to an outer diameter portion of the valve body in which the outlets of the air injection passage and the injection solution are formed so that a predetermined pressure is applied from the inside of the air injection passage and the feed injection passage. Ice cream maker having a forced supply of ice cream solution, characterized in that consisting of an elastic band having elasticity to be elastically lifted. The method according to claim 3 or 4, The front of the cylinder is connected to the air inlet path of the valve body to the outside, and the connecting member for connecting the stock solution inlet and the bypass passage to the storage tank is installed, the connecting member is the air inlet, the stock solution inlet and bypass First, second, and third insertion portions are formed to be inserted into the passage passage, and first, second, and third passages are formed in the first, second, and third insertion portions, respectively. An ice cream maker having an ice cream compulsory supplying device, characterized in that.