Disc type refrigerating device and ice cream machine

Abstract

The invention discloses a disc type refrigeration device and an ice cream machine, and belongs to the field of refrigeration. The disc type refrigerating device comprises a compressor, a condenser, a throttle valve and an evaporator, and the evaporator is a disc type freezing cylinder; the disc type freezing cylinder comprises a horizontally-placed disc-shaped shell and further comprises an upper refrigerating disc and a lower refrigerating disc which are located at the top and the bottom of the shell respectively. A rotatable impeller is also mounted in the shell; and the discharge hole of the shell is formed in one side of the outer cylindrical surface of the shell. The disc type freezing cylinder body design is adopted, under the same volume, the freezing crystallization area of the disc type freezing cylinder is doubled compared with that of a traditional pipe barrel type freezing cylinder, the problems that an inner cavity of the freezing cylinder is small in freezing area and low in crystallization efficiency are solved, and meanwhile the disc type freezing cylinder has the advantages of being thorough in discharging, convenient to control and the like.

Description

Technical Field

[0001] The invention belongs to the field of refrigeration, and in particular relates to a disc type refrigeration device and an ice cream machine. Background Art

[0002] The freezing cylinder is one of the core components of the ice cream machine, mainly used for cooling and stirring the raw materials. The traditional freezing cylinder is a tube type, which has the advantages of simple structure, easy control and operation, but also has the following defects: 1. Only the cylinder wall is in contact with the refrigerant, the freezing area is small, and the raw materials in the center cannot be fully cooled, resulting in low crystallization efficiency.

[0003] 2. The stirring spiral blades in the freezing cylinder are used to stir, push, and scrape the raw materials on the inner wall. However, the spiral blades on the agitator push the ice cream forward. Since the raw materials in the frozen state are sticky, they will adhere to the back side of the spiral blades (the side opposite to the pushing direction), resulting in poor discharge and cleaning effects. If you continue to use this freezing cylinder to process other types of ice cream, it will cause cross-flavors. There are two solutions to this problem. One is to defrost first, clean out the remaining ice cream in the freezing cylinder, and then clean and replace new raw materials. This will cause a waste of raw materials, electricity and time; the other solution is to equip multiple freezing cylinders, corresponding to different flavors, to prevent cross-flavors, but the cost is high and the equipment is large. Summary of the invention

[0004] The present invention proposes a plate-type refrigeration device and an ice cream machine, the purposes of which are: 1. to solve the problem of small freezing area in the freezing cylinder and low crystallization efficiency; 2. to solve the problem that raw materials cannot be completely pushed out.

[0005] The technical solution of the present invention is as follows: A disk-type refrigeration device comprises a compressor, a condenser, a throttle valve and an evaporator, wherein the output port of the compressor is connected to the input port of the condenser, the output port of the condenser is connected to the refrigerant inlet end of the evaporator through the throttle valve, the refrigerant outlet end of the evaporator is connected to the input port of the compressor, and the evaporator is a disk-type freezing cylinder; the disk-type freezing cylinder comprises a horizontally placed disk-shaped shell, and also comprises an upper cooling plate and a lower cooling plate respectively located at the top and bottom of the shell; A rotatable impeller is also installed in the shell; the discharge port of the shell is opened on one side of the outer cylindrical surface of the shell.

[0006] As a further improvement of the plate-type refrigeration device: spiral baffles are provided in the inner cavities of the upper refrigeration plate and the lower refrigeration plate, and the spiral baffles constitute a spiral refrigerant flow channel; the upper refrigeration plate and the lower refrigeration plate are both provided with the refrigerant inlet end and the refrigerant outlet end, the refrigerant inlet end is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end is opened at the inner end of the refrigerant flow channel.

[0007] As a further improvement of the plate-type refrigeration device: the plate-type freezing cylinder further comprises a material inlet pipe, and the material inlet pipe is connected to the center of the top of the shell.

[0008] As a further improvement of the disk refrigeration device: the impeller comprises an upper impeller and a lower impeller which rotate independently, and the axes of the upper impeller and the lower impeller coincide with the axis of the shell; The upper impeller comprises a first hub and a plurality of first blades uniformly distributed around the first hub; the lower impeller comprises a second hub and a plurality of second blades uniformly distributed around the second hub; The first blade and the second blade have the same bending direction.

[0009] As a further improvement of the disk refrigeration device: an upper scraper is installed on the top of the first blade, and the upper scraper contacts the top surface of the inner cavity of the shell; a lower scraper is installed on the bottom of the second blade, and the lower scraper contacts the bottom surface of the inner cavity of the shell; An elastic washer is arranged between the first hub and the second hub.

[0010] As a further improvement of the disk refrigeration device: the cross-sectional shape of the first blade is L-shaped, including a first horizontal portion and a first vertical portion, one end of the first horizontal portion is connected to the lower end of the first vertical portion; the cross-sectional shape of the upper scraper strip is an inverted U-shaped, the upper scraper strip is buckled on the top of the first vertical portion, and the cross-sectional shape of the top is a dovetail shape; The cross-sectional shape of the second blade is an inverted L-shape, including a second horizontal portion and a second vertical portion, one end of the second horizontal portion is connected to the upper end of the second vertical portion; the cross-sectional shape of the lower scraper strip is a U-shape, the lower scraper strip is buckled at the bottom of the second vertical portion, and the cross-sectional shape of the bottom is a dovetail shape.

[0011] As a further improvement of the disk-type refrigeration device: the outer end of the first blade is provided with a first inner hook protrusion extending inward, and the first inner hook protrusion is plugged into the second slot at the outer end of the upper scraper strip; The inner end of the upper scraper strip is provided with a first plug-in protrusion extending inward, and the first plug-in protrusion is plugged into a first slot provided on the first hub; The outer end of the second blade is provided with a second inner hook protrusion extending inward, and the second inner hook protrusion is plugged into the fourth slot at the outer end of the lower scraper strip; The inner end of the lower scraper strip is provided with a second plugging protrusion extending inward, and the second plugging protrusion is plugged into a third slot provided on the second hub.

[0012] As a further improvement of the disk refrigeration device: a sleeve is connected to the bottom of the shell, a transmission sleeve is installed in the sleeve through a bearing, and a transmission shaft is installed in the inner hole of the transmission sleeve through a bearing; The upper end of the transmission sleeve is fixedly connected to the second wheel hub; the upper end of the transmission shaft is fixedly connected to the first wheel hub; The disk type refrigeration device further comprises a driving motor and a transmission mechanism, wherein the driving motor drives the transmission sleeve and the transmission shaft to rotate through the transmission mechanism.

[0013] As a further improvement of the disk refrigeration device: the transmission mechanism includes a bearing seat fixedly arranged relative to the housing, and also includes a first gear shaft, a second gear shaft, a first input external gear, a second input external gear, an input internal gear and an electric push rod; The first input external gear is mounted on the transmission shaft, and the second input external gear and the input internal gear are both mounted on the transmission sleeve; The first gear shaft is transmission-connected to the driving motor and meshes with the first input external gear; The second gear shaft is installed in the rotating sleeve through a linear bearing, and the rotating sleeve is installed in the bearing seat through a bearing; the electric push rod is connected to the second gear shaft through the bearing, and pushes the second gear shaft to move up and down along the linear bearing; The second gear shaft is provided with a first transmission gear and a second transmission gear; the first transmission gear is meshed with the first input external gear; when the electric push rod pushes the second gear shaft to the first working position, the second transmission gear is meshed with the second input external gear and disengaged from the input internal gear, and at this time the transmission sleeve and the transmission shaft rotate in the same direction; when the electric push rod pushes the second gear shaft to the second working position, the second transmission gear is meshed with the input internal gear and disengaged from the second input external gear, and at this time the transmission sleeve and the transmission shaft rotate in opposite directions and the rotation speed of the transmission sleeve is lower than the rotation speed of the transmission shaft.

[0014] The present invention also provides an ice cream machine, comprising the above-mentioned disc-type refrigeration device, wherein the disc-type refrigeration device is wrapped in a second heat-insulating layer; The ice cream machine also includes a plurality of raw material supply components arranged in parallel, each of which includes a raw material container, a stirring device, a conveying pipeline, a liquid suction pump, an air supply pump and a solenoid valve; A refrigerant pipeline is arranged around the raw material container, a stirring device is located at the bottom of the raw material container and is used to stir the raw materials in the raw material container, and the discharge port of the raw material container is connected with the feed pipe of the disc-type freezing cylinder through a conveying pipeline; the liquid suction pump and the air supply pump are arranged on the conveying pipeline, and the solenoid valve is installed at the end of the conveying pipeline; All raw material containers are wrapped in the first insulation layer; The ice cream machine also includes a discharge valve installed at the discharge port of the shell.

[0015] Compared with the prior art, the present invention has the following positive effects: 1. The present invention adopts a disc-type freezing cylinder design. Since the surface area of ​​the cylinder is concentrated in the top and bottom areas that can contact the refrigerant in the upper and lower refrigeration plates, the freezing crystallization area of ​​the disc-type freezing cylinder is increased compared with the traditional tube-type freezing cylinder under the same volume, which solves the problem of small freezing area and low crystallization efficiency in the freezing cylinder cavity, and the crystallization refrigeration efficiency can be improved.

[0016] 2. Due to the disc design, the space occupied by the impeller when it rotates accounts for more than 95% of the volume of the freezing cylinder. The cylinder is smooth and has no dead corners. Therefore, the centrifugal effect generated by the rotation of the impeller can be used to clear the remaining ice cream in the freezing cylinder without thawing, avoiding the waste of raw materials and electricity, saving time, and solving the problem of difficult cleaning.

[0017] 3. The blades are equipped with scrapers that are in close contact with the top and bottom surfaces of the cylinder wall, further improving the cleaning effect. At the same time, the inner and outer ends of the scrapers are fixed to the impeller through two sets of plug-in structures to ensure that the scrapers will not fall off under the action of centrifugal force. The outer end of the scraper twists with the shape of the blade and contacts the inner wall of the shell, further improving the cleaning effect.

[0018] 4. The transmission mechanism of the present invention is a reversible structure, which is easier to control: when the raw materials just enter the freezing cylinder and are in the mixed freezing stage, the upper and lower impellers rotate in opposite directions, the blades of the upper impeller push the raw materials to flow outward, and the blades of the lower impeller scrape the raw materials inward, and due to the structure of the internal and external gears, the rotation speed of the upper impeller must be higher than that of the lower impeller, so that the raw materials entering from the top quickly move to the outer edge under the dual action of the upper impeller guide and centrifugal force, fall into the lower layer after reaching the edge of the cylinder body, and then gradually return to the central area under the slow guidance of the lower impeller, and so on repeatedly, all the raw materials can fully contact with the top and bottom surfaces of the cylinder body, while achieving stirring, the cooling effect is also greatly improved. When discharging, the electric push rod changes the working position, so that the two impellers rotate in the same direction, both of them will be in a high-speed operation state, and the direction of the blades is to push the raw materials to the outer edge, and then superimposed with the centrifugal force during rotation, all the ice cream in the cylinder can be quickly and thoroughly cleared out.

[0019] 5. The ice cream in the present invention has multiple sets of raw material supply components, and the raw materials entering the freezing cylinder can be selected through the electromagnetic valve. After the previous ice cream is made, the original materials in the disc freezing cylinder will be completely cleaned out, and then new raw materials can be replaced, so that a single ice cream machine and a single cylinder can produce a single cup of ice cream with multiple varieties and flavors on site, without flavor transfer, ensuring quality and quantity, and meeting people's demand for personalized services. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the ice cream machine of the present invention; Figure 2 for Figure 1 A partial enlarged view of part A; Figure 3 for Figure 2 II-direction cross-sectional view; Figure 4 for Figure 2 II-II sectional view; Figure 5 for Figure 1 A partial enlarged view of part B; Figure 6 This is a bottom view of the upper impeller; Figure 7 It is a cross-sectional view of the upper impeller and the upper scraper; Figure 8 is a cross-sectional view of the first blade and the upper scraper strip; Fig. 9 is a three-dimensional cross-sectional view of an upper scraper strip; Fig.10 This is a bottom view of the lower impeller; Fig.11 It is a cross-sectional view of the lower impeller and the lower scraper; Fig.12 is a cross-sectional view of the second blade and the lower scraper strip; Fig.13 It is a three-dimensional cross-sectional view of the lower scraper strip.

[0021] Reference numerals include: 1. First insulation layer; 2. Raw material container; 3. Stirring device; 4. Suction pump; 5. Air supply pump; 6. Solenoid valve; 7. Compressor; 8. Condenser; 9. Throttle valve; 10. Second insulation layer; 11. Plate-type freezing cylinder; 12. Transmission mechanism; 13. Drive motor; 14. Discharge valve; 1101. Feed pipe; 1102. Spiral baffle; 1103. Upper refrigeration plate; 1104. Lower refrigeration plate; 1105. Upper impeller; 11051. First blade; 11052. First wheel hub; 11053. First inner hook protrusion; 11054. First slot; 1106. Lower impeller; 11061. Second blade; 11062. Second wheel hub; 11063. Second inner hook protrusion; 11064. The third slot; 1107, elastic gasket; 1108, sleeve; 1109, transmission sleeve; 1110, transmission shaft; 1111, refrigerant inlet; 1112, refrigerant outlet; 1113, upper scraper; 11131, second slot; 11132, first plug-in protrusion; 1114, lower scraper; 11141, fourth slot; 11142, second plug-in protrusion; 1201, first gear shaft; 1202, first input external gear; 1203, electric push rod; 1204, bearing seat; 1205, rotating sleeve; 1206, second gear shaft; 12061, first transmission gear; 12062, second transmission gear; 1207, second input external gear; 1208, input internal gear. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0023] like Figure 1 A disk type refrigeration device, specifically a disk type refrigeration device in an ice cream machine, comprises a compressor 7, a condenser 8, a throttle valve 9 and an evaporator.

[0024] The output port of the compressor 7 is connected to the input port of the condenser 8 , the output port of the condenser 8 is connected to the refrigerant inlet end 1111 of the evaporator through the throttle valve 9 , and the refrigerant outlet end 1112 of the evaporator is connected to the input port of the compressor 7 .

[0025] Specifically, Figure 1 and Figure 2 The evaporator is a disk-type freezing cylinder 11, which includes a disk-shaped shell placed horizontally. Figure 3The shell is composed of a U-shaped container on the left and a freezing cylinder door plate on the right. A half-moon plate is provided on the freezing cylinder door plate. The half-moon plate is inserted into the opening of the U-shaped container, so that the shell forms a round pancake-shaped space. The discharge port of the shell is opened on one side of the outer cylindrical surface of the shell, that is, the freezing cylinder door plate.

[0026] like Figure 1 and Figure 2 The plate-type freezing cylinder 11 further comprises a feed pipe 1101, which is vertically connected to the center of the top of the shell. The plate-type freezing cylinder 11 further comprises an upper refrigeration plate 1103 and a lower refrigeration plate 1104 located at the top and bottom of the shell respectively.

[0027] Furthermore, if Figure 4 The upper cooling plate 1103 and the lower cooling plate 1104 are both provided with spiral baffles 1102 in their inner cavities, and the spiral baffles 1102 form a spiral refrigerant flow channel. The upper cooling plate 1103 and the lower cooling plate 1104 are both provided with the refrigerant inlet end 1111 and the refrigerant outlet end 1112, and the refrigerant inlet end 1111 is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end 1112 is opened at the inner end of the refrigerant flow channel. When the refrigerant flows in the cooling plate along the refrigerant flow channel, it can exchange heat with the raw material in the shell to freeze the raw material.

[0028] like Figure 2 A rotatable impeller is also installed in the housing. In this embodiment, the impeller includes an upper impeller 1105 and a lower impeller 1106 that rotate independently, and the axes of the upper impeller 1105 and the lower impeller 1106 coincide with the axis of the housing.

[0029] like Figure 6 , Figure 7 , Figure 8 , Fig. 9As shown, the upper impeller 1105 includes a first hub 11052 and a plurality of first blades 11051 uniformly distributed around the first hub 11052. An upper scraper bar 1113 is installed on the top of the first blade 11051, and the upper scraper bar 1113 contacts the top surface of the inner cavity of the shell. Furthermore, the cross-sectional shape of the first blade 11051 is L-shaped, including a first horizontal portion and a first vertical portion, and one end of the first horizontal portion is connected to the lower end of the first vertical portion. The upper scraper bar 1113 is made of silicone material, and the cross-sectional shape is an inverted U shape. The upper scraper bar 1113 is buckled on the top of the first vertical portion, and the top cross-sectional shape is dovetail-shaped. The L-shaped structure can achieve good stirring and diversion effects, and the dovetail structure of the scraper bar can increase the contact area with the shell and improve the scraping effect. Furthermore, the outer end of the first blade 11051 is provided with a first inner hook protrusion 11053 extending inwardly, and the first inner hook protrusion 11053 is plugged into the second slot 11131 at the outer end of the upper scraper bar 1113. The inner end of the upper scraper bar 1113 is provided with a first plugging protrusion 11132 extending inwardly, and the first plugging protrusion 11132 is plugged into the first slot 11054 provided on the first hub 11052. The inner and outer ends of the scraper bar are fixed to the impeller through two sets of plug-in structures, which can ensure that the scraper bar will not fall off easily under the action of centrifugal force.

[0030] Similarly, if Fig.10 , Fig.11 , Fig.12 , Fig.13 As shown, the lower impeller 1106 includes a second hub 11062 and a plurality of second blades 11061 uniformly distributed around the second hub 11062. A lower scraper bar 1114 is installed at the bottom of the second blade 11061, and the lower scraper bar 1114 contacts the bottom surface of the inner cavity of the shell. The cross-sectional shape of the second blade 11061 is an inverted L-shape, including a second horizontal portion and a second vertical portion, and one end of the second horizontal portion is connected to the upper end of the second vertical portion. The cross-sectional shape of the lower scraper bar 1114 is U-shaped, and the lower scraper bar 1114 is buckled at the bottom of the second vertical portion, and the cross-sectional shape of the bottom is dovetail-shaped. The outer end of the second blade 11061 is provided with a second inner hook protrusion 11063 extending inward, and the second inner hook protrusion 11063 is plugged into the fourth slot 11141 at the outer end of the lower scraper bar 1114. The inner end of the lower scraper strip 1114 is provided with a second plug-in protrusion 11142 extending inwardly, and the second plug-in protrusion 11142 is plugged into a third slot 11064 provided on the second hub 11062 .

[0031] like Figure 6 and Fig.10 As shown, the bending directions of the first blade 11051 and the second blade 11061 are the same. Figure 8 and Fig.12As shown, the height of one side of the U-shaped cross-section of the scraper strip corresponding to the outer rotating surface of the blade is equal to the height of the blade, and because the blade is curved, the outermost end of this side of the scraper strip will exceed the blade as it bends and be located outside the outermost end of the blade, so that it can directly contact the shell and achieve comprehensive scraping of the entire inner wall of the shell.

[0032] like Figure 2 and Figure 5 As shown, a sleeve 1108 is connected to the bottom of the shell, a transmission sleeve 1109 is installed in the sleeve 1108 through a bearing, and a transmission shaft 1110 is installed in the inner hole of the transmission sleeve 1109 through a bearing.

[0033] The upper end of the transmission sleeve 1109 is fixedly connected to the second hub 11062 through an inner hexagonal structure, and the upper end of the transmission shaft 1110 is fixedly connected to the first hub 11052 through an inner hexagonal structure. The bottom of the first hub 11052 passes through the center hole of the second hub 11062, and the two are matched with the shaft hole and can rotate relatively. An elastic gasket 1107 is arranged between the contact end surfaces of the first hub 11052 and the second hub 11062. On the one hand, it plays a sealing role, and on the other hand, it can push the upper impeller 1105 and the lower impeller 1106 to both sides, so that the upper scraper bar 1113 and the lower scraper bar 1114 are kept in close contact with the shell, thereby improving the scraping effect.

[0034] The disk type refrigeration device further comprises a driving motor 13 and a transmission mechanism 12. The driving motor 13 drives the transmission sleeve 1109 and the transmission shaft 1110 to rotate through the transmission mechanism 12.

[0035] Furthermore, the transmission mechanism 12 includes a bearing seat 1204 fixedly arranged relative to the housing, and also includes a first gear shaft 1201 , a second gear shaft 1206 , a first input external gear 1202 , a second input external gear 1207 , an input internal gear 1208 and an electric push rod 1203 .

[0036] The first input external gear 1202 is mounted on the transmission shaft 1110 to drive the upper impeller 1105 to rotate. The second input external gear 1207 and the input internal gear 1208 are both mounted on the transmission sleeve 1109 to drive the lower impeller 1106 to rotate.

[0037] The first gear shaft 1201 is transmission-connected to the driving motor 13 and meshes with the first input external gear 1202 .

[0038] The second gear shaft 1206 is installed in the rotating sleeve 1205 through a linear bearing, and the rotating sleeve 1205 is installed in the bearing seat 1204 through a bearing. The electric push rod 1203 is connected to the second gear shaft 1206 through a bearing, and pushes the second gear shaft 1206 to move up and down along the linear bearing.

[0039] The second gear shaft 1206 is provided with a first transmission gear 12061 and a second transmission gear 12062. The first transmission gear 12061 is relatively wide and is always meshed with the first input external gear 1202. When the electric push rod 1203 pushes the second gear shaft 1206 to the first station, the second transmission gear 12062 meshes with the second input external gear 1207 and disengages from the input internal gear 1208, and at this time, the transmission sleeve 1109 and the transmission shaft 1110 rotate in the same direction. When the electric push rod 1203 pushes the second gear shaft 1206 to the second station, the second transmission gear 12062 meshes with the input internal gear 1208 and disengages from the second input external gear 1207, and at this time, the transmission sleeve 1109 and the transmission shaft 1110 rotate in opposite directions and the rotation speed of the transmission sleeve 1109 is lower than the rotation speed of the transmission shaft 1110.

[0040] The working process is as follows: In the stirring and freezing stage, the electric push rod 1203 pushes the second gear shaft 1206 to the second station. At this time, the driving motor 13 drives the upper impeller 1105 to rotate counterclockwise at high speed through the first gear shaft 1201, the first input external gear 1202, and the transmission shaft 1110 (the counterclockwise direction here is based on Figure 6 The first input outer gear 1202 drives the lower impeller 1106 to rotate clockwise at a low speed through the second gear shaft 1206, the input inner gear 1208, and the transmission sleeve 1109 (the clockwise direction here is based on Fig.10 The raw material liquid enters the shell of the disc-type freezing cylinder 11 from the feed pipe 1101 and reaches the top center area of ​​the shell. Then, under the dual effects of the rotation and centrifugal force of the upper impeller 1105 blades, the raw material liquid moves toward the outer edge while cooling along the top surface of the shell. After reaching the edge, it is blocked by the inner wall of the shell and flows to the lower layer. Then, under the low-speed reverse inner thrust of the lower impeller 1106, it moves toward the center close to the bottom surface of the shell, so as to fully carry out heat exchange and complete freezing and cooling. Under the forward and reverse rotation of the blades, the raw material liquid quickly solidifies and expands. It should be noted that the speed of the driving motor 13 in the stirring and freezing stage should be set within an appropriate range, which should ensure that the high-speed rotating upper impeller 1105 has a certain centrifugal force, and at the same time ensure that the low-speed rotating lower impeller 1106 will not throw the raw material out through centrifugal force.

[0041] In the discharging stage, the electric push rod 1203 pushes the second gear shaft 1206 to the first station. At this time, the working mode of the upper impeller 1105 remains unchanged, and the first input external gear 1202 drives the lower impeller 1106 to rotate counterclockwise at high speed (same direction and speed as the upper impeller 1105) through the second gear shaft 1206, the second input external gear 1207, and the transmission sleeve 1109. At this time, the upper impeller 1105 and the lower impeller 1106 rotate forward at the same time to knock out the material. It should be noted that the speed of the driving motor 13 in the discharging stage is significantly higher than that in the stirring and freezing stage, and its purpose is to improve the discharging effect.

[0042] The inside of the disk-type freezing cylinder 11 is smooth without dead corners, and the parts are tightly assembled without interlayers. Under the impeller's push and centrifugal action, the original materials will be cleaned out thoroughly without residue, so that single-cup single-product on-site production can be achieved without flavor change, quality and quantity are guaranteed, and people's requirements for personalized services are met. At the same time, by using the upper impeller 1105 and the lower impeller 1106 to rotate forward at the same time, the centrifugal effect generated by adjusting the impeller agitator speed can be cleaned out of the remaining ice cream materials in the freezing cylinder without thawing, avoiding the waste of raw materials and electrical energy and saving time. This function can also be applied to drying, sterilization and other operation links. Embodiment 2

[0043] like Figure 1 This embodiment discloses an ice cream machine, which includes the disc refrigeration device described in the first embodiment.

[0044] The ice cream machine also includes a plurality of raw material supply components arranged in parallel, each of which includes a raw material container 2, a stirring device 3, a conveying pipeline, a liquid suction pump 4, an air supply pump 5 and a solenoid valve 6.

[0045] A refrigerant pipeline is arranged around the raw material container 2. The stirring device 3 is located at the bottom of the raw material container 2 and is used to stir the raw materials in the raw material container 2. The discharge port of the raw material container 2 is connected to the feed pipe 1101 of the disc-type freezing cylinder 11 through a conveying pipeline. The liquid suction pump 4 and the air supply pump 5 are arranged on the conveying pipeline, and the solenoid valve 6 is installed at the end of the conveying pipeline. The liquid suction pump 4 and the air supply pump 5 can control the expansion rate, and the solenoid valve 6 is used to control the material addition and the variety change. The raw material container 2 can be designed to have different specifications such as 2 to 6, and raw material liquids of different flavors can be placed in each, so as to facilitate the production of products of different flavors.

[0046] All the raw material containers 2 are wrapped in the first heat-insulating layer 1 , and the plate-type refrigeration device is wrapped in the second heat-insulating layer 10 .

[0047] The ice cream machine also includes a discharge valve 14 installed at the discharge port of the housing. The valve stem of the discharge valve 14 is installed in the door plate of the freezing cylinder, and a slope discharge channel is designed at the discharge port.

[0048] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A disk-type refrigeration device, comprising a compressor (7), a condenser (8), a throttle valve (9) and an evaporator, wherein the output port of the compressor (7) is connected to the input port of the condenser (8), the output port of the condenser (8) is connected to the refrigerant inlet end (1111) of the evaporator through the throttle valve (9), and the refrigerant outlet end (1112) of the evaporator is connected to the input port of the compressor (7), characterized in that: The evaporator is a disc-type freezing cylinder (11); the disc-type freezing cylinder (11) comprises a horizontally placed disc-shaped shell, and also comprises an upper cooling plate (1103) and a lower cooling plate (1104) respectively located at the top and bottom of the shell; A rotatable impeller is also installed in the shell; the discharge port of the shell is opened on one side of the outer cylindrical surface of the shell.

2. The disk type refrigeration device according to claim 1, characterized in that: A spiral baffle (1102) is provided in the inner cavity of the upper cooling plate (1103) and the lower cooling plate (1104), and the spiral baffle (1102) forms a spiral refrigerant flow channel; the upper cooling plate (1103) and the lower cooling plate (1104) are both provided with a refrigerant inlet end (1111) and a refrigerant outlet end (1112), and the refrigerant inlet end (1111) is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end (1112) is opened at the inner end of the refrigerant flow channel.

3. The disk type refrigeration device according to claim 1, characterized in that: The disc-type freezing cylinder (11) further comprises a material inlet pipe (1101), wherein the material inlet pipe (1101) is connected to the center of the top of the shell.

4. The disk type refrigeration device according to claim 3, characterized in that: The impeller comprises an upper impeller (1105) and a lower impeller (1106) that rotate independently, and the axes of the upper impeller (1105) and the lower impeller (1106) both coincide with the axis of the casing; The upper impeller (1105) comprises a first hub (11052) and a plurality of first blades (11051) evenly distributed around the first hub (11052); the lower impeller (1106) comprises a second hub (11062) and a plurality of second blades (11061) evenly distributed around the second hub (11062); The first blade (11051) and the second blade (11061) have the same bending direction.

5. The disk type refrigeration device according to claim 4, characterized in that: An upper scraper bar (1113) is installed at the top of the first blade (11051), and the upper scraper bar (1113) contacts the top surface of the inner cavity of the shell; a lower scraper bar (1114) is installed at the bottom of the second blade (11061), and the lower scraper bar (1114) contacts the bottom surface of the inner cavity of the shell; An elastic gasket (1107) is provided between the first hub (11052) and the second hub (11062).

6. The disk type refrigeration device according to claim 5, characterized in that: The cross-sectional shape of the first blade (11051) is L-shaped, comprising a first horizontal portion and a first vertical portion, one end of the first horizontal portion being connected to the lower end of the first vertical portion; the cross-sectional shape of the upper scraper strip (1113) is an inverted U-shaped, the upper scraper strip (1113) is buckled on the top of the first vertical portion, and the cross-sectional shape of the top portion is a dovetail shape; The cross-sectional shape of the second blade (11061) is an inverted L-shape, comprising a second horizontal portion and a second vertical portion, one end of the second horizontal portion being connected to the upper end of the second vertical portion; the cross-sectional shape of the lower scraper strip (1114) is a U-shape, the lower scraper strip (1114) is buckled at the bottom of the second vertical portion, and the cross-sectional shape of the bottom is a dovetail shape.

7. The disk type refrigeration device according to claim 5, characterized in that: The outer end of the first blade (11051) is provided with a first inner hook protrusion (11053) extending inward, and the first inner hook protrusion (11053) is plugged into a second slot (11131) at the outer end of the upper scraper strip (1113); The inner end of the upper scraper strip (1113) is provided with a first plug-in protrusion (11132) extending inward, and the first plug-in protrusion (11132) is plugged into a first slot (11054) provided on the first wheel hub (11052); The outer end of the second blade (11061) is provided with a second inner hook protrusion (11063) extending inward, and the second inner hook protrusion (11063) is plugged into a fourth slot (11141) at the outer end of the lower scraper strip (1114); The inner end of the lower scraper strip (1114) is provided with a second plug-in protrusion (11142) extending inward, and the second plug-in protrusion (11142) is plugged into a third slot (11064) provided on the second wheel hub (11062).

8. The disk type refrigeration device according to claim 4, characterized in that: The bottom of the housing is connected to a sleeve (1108), a transmission sleeve (1109) is installed in the sleeve (1108) via a bearing, and a transmission shaft (1110) is installed in the inner hole of the transmission sleeve (1109) via a bearing; The upper end of the transmission sleeve (1109) is fixedly connected to the second wheel hub (11062); the upper end of the transmission shaft (1110) is fixedly connected to the first wheel hub (11052); The disk-type refrigeration device further comprises a driving motor (13) and a transmission mechanism (12); the driving motor (13) drives the transmission sleeve (1109) and the transmission shaft (1110) to rotate via the transmission mechanism (12).

9. The disk type refrigeration device according to claim 8, characterized in that: The transmission mechanism (12) comprises a bearing seat (1204) fixedly arranged relative to the housing, and also comprises a first gear shaft (1201), a second gear shaft (1206), a first input external gear (1202), a second input external gear (1207), an input internal gear (1208) and an electric push rod (1203); The first input external gear (1202) is mounted on the transmission shaft (1110), and the second input external gear (1207) and the input internal gear (1208) are both mounted on the transmission sleeve (1109); The first gear shaft (1201) is transmission-connected to the drive motor (13) and meshes with the first input external gear (1202); The second gear shaft (1206) is installed in the rotating sleeve (1205) via a linear bearing, and the rotating sleeve (1205) is installed in the bearing seat (1204) via a bearing; the electric push rod (1203) is connected to the second gear shaft (1206) via the bearing, and pushes the second gear shaft (1206) to move up and down along the linear bearing; The second gear shaft (1206) is provided with a first transmission gear (12061) and a second transmission gear (12062); the first transmission gear (12061) is meshed with the first input external gear (1202); when the electric push rod (1203) pushes the second gear shaft (1206) to reach the first working position, the second transmission gear (12062) is meshed with the second input external gear (1207) and is disengaged from the input internal gear (1208). When the electric push rod (1203) pushes the second gear shaft (1206) to reach the second working position, the second transmission gear (12062) meshes with the input internal gear (1208) and disengages from the second input external gear (1207). At this time, the transmission sleeve (1109) and the transmission shaft (1110) rotate in the opposite direction and the rotation speed of the transmission sleeve (1109) is lower than the rotation speed of the transmission shaft (1110).

10. An ice cream machine, characterized in that: Comprising a plate-type refrigeration device as claimed in any one of claims 1 to 9, wherein the plate-type refrigeration device is wrapped in a second thermal insulation layer (10); The ice cream machine also includes a plurality of sets of raw material supply components arranged in parallel, each set of raw material supply components respectively including a raw material container (2), a stirring device (3), a conveying pipeline, a liquid suction pump (4), an air supply pump (5) and a solenoid valve (6); A refrigerant pipeline is arranged around the raw material container (2); a stirring device (3) is located at the bottom of the raw material container (2) and is used to stir the raw materials in the raw material container (2); the discharge port of the raw material container (2) is connected to the feed pipe (1101) of the disc-type freezing cylinder (11) through a conveying pipeline; the liquid suction pump (4) and the air supply pump (5) are arranged on the conveying pipeline, and the solenoid valve (6) is installed at the end of the conveying pipeline; All raw material containers (2) are wrapped in the first thermal insulation layer (1); The ice cream machine also includes a discharge valve (14) installed at the discharge port of the shell.

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