Efficient and energy-saving snow melting machine

Abstract

The utility model relates to an efficient and energy-saving snow melting machine which comprises a beverage barrel and an evaporator, an ice-making outer cavity is arranged in the beverage barrel, and the evaporator is arranged in the ice-making outer cavity. The evaporator comprises an outer sleeve and an inner sleeve, the inner sleeve is sleeved with the outer sleeve in a spaced mode, a refrigerant evaporation cavity is formed by an interlayer between the outer sleeve and the inner sleeve, and refrigerant media are guided into the refrigerant evaporation cavity. The outer wall of the outer sleeve forms an outer refrigeration surface, and the inner wall of the inner sleeve forms an inner refrigeration surface; an ice-making inner cavity is formed in the inner side of the inner sleeve; the snow melting machine further comprises an outer screw rod, an inner screw rod and a power device. And the outer screw rod and the inner screw rod are matched with each other, so that the beverage solution circularly enters the ice-making inner cavity and the ice-making outer cavity for re-icing. The snow melting machine can improve the refrigeration efficiency, reduce the cooling capacity loss so as to shorten the waiting time, achieve the purpose of saving electricity and energy, meet the quick and changeable requirements of consumers, and improve the use experience of products.

Description

TECHNICAL FIELD

[0001] The utility model relates to a refrigeration equipment, concretely is a high -efficient energy -conserving snow melting machine. BACKGROUND

[0002] The snow melting machine is also called a slush machine, which is a cold drink electric appliance for freezing liquid sugar-containing drinks such as cola, wine, coffee, soda, juice, chocolate and milk into cool and refreshing slush drinks. The refrigeration assembly of the snow melting machine includes a compressor, a condenser and an evaporator. The compressor and the condenser are standard components, which only need to be matched according to the refrigeration efficiency requirements. The direct influencing factor of the refrigeration effect is the design of the evaporator, which determines the refrigeration heat exchange area and the size of the cold quantity conduction loss, thereby directly affecting the refrigeration efficiency of the entire refrigeration assembly. Currently, whether for commercial or household use, the evaporator of the snow melting machine is immersed in the beverage solution, and the refrigeration heat exchange is performed between the outer wall of the evaporator and the beverage solution in the solution cylinder. However, the disadvantages of this refrigeration method are obvious, which are as follows:

[0003] The small heat exchange area of the traditional evaporator leads to low refrigeration efficiency: the traditional evaporator relies on the single-side refrigeration heat exchange of the cylindrical outer wall, which limits the contact and conduction area between the evaporator outer wall and the beverage solution. The small refrigeration heat exchange area directly limits the refrigeration efficiency of the refrigeration assembly.

[0004] The cold quantity conduction loss of the traditional evaporator is very large: the refrigerant enters the copper tube winding from the inlet pipe, changes from liquid to gas in the heat exchange process, and releases cold quantity to the outside of the copper tube winding. Then, the copper tube winding transfers the cold quantity to the stainless steel tube wall of the evaporator. Finally, the stainless steel tube wall transfers the cold quantity to the beverage solution. Therefore, the refrigeration heat exchange and transfer of the refrigerant to the beverage solution need to pass through two different media. The more the media levels, the greater the cold quantity loss. Moreover, only part of the copper tube is in contact with the stainless steel tube wall. In addition, the copper tube winding and the stainless steel tube wall of the evaporator cannot perfectly fit due to the hard-to-hard contact, which causes the small contact and conduction area and greatly reduces the cold quantity conduction effect. The actual cold quantity transferred to the beverage solution is less than 30%.

[0005] The working mode of the traditional snow melting machine is to completely immerse the evaporator in the beverage solution. In addition, the evaporator is in a cylindrical shape for single-side refrigeration, which causes the waste of cold quantity in the middle of the evaporator. Moreover, the cold quantity conduction media has too many levels and the contact and conduction area is too small, which results in a large cold quantity transfer loss. Therefore, the traditional snow melting machine often needs to consume 45 minutes or even more than one hour to produce 2 liters of slush cold drinks. This slush cold drink production technology, which has been used for more than ten years, is time-consuming and power-consuming, and cannot meet the various sudden and spontaneous cold drink demands.

[0006] With the improvement of living standards, more and more consumers hope to enjoy the fun of making smoothie cold drinks at home. However, this traditional machine for making smoothie cold drinks is time-consuming and power-consuming, so how to design a high-efficiency snow melting machine has become a technical problem to be solved. Utility model content

[0007] The utility model discloses a high -efficient energy -conserving snow melting machine, and the snow melting machine can improve refrigeration efficiency, reduce cold quantity loss and shorten waiting time under the premise of not increasing refrigeration power consumption, so as to achieve the purpose of saving electricity and energy saving, and can meet the fast and changeable demand of consumers and improve product use experience.

[0008] The utility model discloses a high -efficient energy -conserving snow melting machine, and the snow melting machine can improve refrigeration efficiency, reduce cold quantity loss and shorten waiting time under the premise of not increasing refrigeration power consumption, so as to achieve the purpose of saving electricity and energy saving, and can meet the fast and changeable demand of consumers and improve product use experience.

[0009] A high-efficiency energy-saving snow melting machine, comprising a beverage cylinder and an evaporator, the beverage cylinder is provided with an ice-making outer cavity, and the evaporator is arranged in the ice-making outer cavity; the evaporator comprises an outer sleeve and an inner sleeve, the outer sleeve is arranged on the outer side of the inner sleeve in a spaced manner, and a refrigerant evaporation cavity in the shape of a ring pipe is formed in the interlayer between the outer sleeve and the inner sleeve; a refrigerant medium is introduced into the refrigerant evaporation cavity and transported from the front end to the rear end of the refrigerant evaporation cavity; the outer wall of the outer sleeve forms an outer refrigeration surface, and the inner wall of the inner sleeve forms an inner refrigeration surface; the cold energy generated by the evaporation of the refrigerant medium is directly transmitted to the outer refrigeration surface and the inner refrigeration surface; the inner side of the inner sleeve is provided with an ice-making inner cavity which is open at the front end and the rear end; the evaporator is spaced apart from the front end and the rear end of the beverage cylinder, so that the front end of the ice-making outer cavity is communicated with the front end of the ice-making inner cavity, and the rear end of the ice-making outer cavity is communicated with the rear end of the ice-making inner cavity; the beverage solution enters the ice-making outer cavity and the ice-making inner cavity respectively; the snow melting machine further comprises an outer screw for scraping the ice crystals on the outer refrigeration surface and pushing them forward, an inner screw for scraping the ice crystals on the inner refrigeration surface and pushing them backward, and a power device for driving the outer screw and the inner screw to rotate; the outer screw and the inner screw cooperate with each other to make the beverage solution circulate into the ice-making inner cavity and the ice-making outer cavity for repeated ice making.

[0010] As a specific solution, the evaporator further comprises a spiral gas guide spiral piece, and the gas guide spiral piece is arranged between the outer sleeve and the inner sleeve; the outer side of the gas guide spiral piece is close to the inner wall of the outer sleeve, and the inner side of the gas guide spiral piece is close to the outer wall of the inner sleeve, so as to separate the refrigerant evaporation cavity into a spiral refrigerant channel, and the refrigerant medium is transported along the refrigerant channel.

[0011] As another specific solution, the two axial ends of the outer sleeve and the two axial ends of the inner sleeve are connected to each other in a closed manner, so that the two axial ends of the refrigerant evaporation cavity are arranged in a closed manner; a refrigerant inlet pipe for introducing the refrigerant medium and a refrigerant outlet pipe for discharging the refrigerant medium are arranged in the refrigerant evaporation cavity; the inlet end of the refrigerant inlet pipe extends to the front end of the evaporator and is communicated with one end of the refrigerant channel, and the outlet end of the refrigerant outlet pipe extends to the rear end of the evaporator and is communicated with the other end of the refrigerant channel.

[0012] As a further specific solution, the evaporator comprises a first sealing edge and a second sealing edge, the first sealing edge is connected to the axial front end of the outer sleeve and the axial front end of the inner sleeve respectively, the second sealing edge is connected to the axial rear end of the outer sleeve and the axial rear end of the inner sleeve respectively, the refrigerant inlet pipe extends into the refrigerant evaporation cavity axially through the first sealing edge or the second sealing edge, and the refrigerant outlet pipe extends into the refrigerant evaporation cavity axially through the first sealing edge or the second sealing edge.

[0013] As a further specific solution, the power device is a driving motor, the motor shaft of the driving motor is detachably drivingly connected to the rear end of the inner screw through the shaft sleeve, the front end of the inner screw is drivingly connected to the front end of the outer screw, and the front end of the inner screw and / or the front end of the outer screw is / are detachably rotatably connected to the beverage cartridge, the outer screw and the inner screw are coaxially matched with each other, and the driving motor drives the outer screw and the inner screw to rotate in the same direction.

[0014] As a further specific solution, the outer screw comprises a linkage sleeve, and the inner screw comprises a driving shaft; the front end of the driving shaft is detachably coaxially inserted into the linkage sleeve, and the rear end of the driving shaft is detachably coaxially inserted into the shaft sleeve; a convex shaft is arranged on the inner wall of the beverage cartridge, a shaft hole is arranged on the front end of the driving shaft, the front end of the driving shaft penetrates through the linkage sleeve, and the convex shaft and the shaft hole are detachably rotatably inserted into each other.

[0015] As a further specific solution, the outer screw is provided with outer spiral vanes, and the inner side of the outer spiral vanes is close to the outer refrigeration surface; the inner screw is provided with inner spiral vanes, and the outer side of the inner spiral vanes is close to the inner refrigeration surface; the spiral extension direction of the outer spiral vanes is opposite to the spiral extension direction of the inner spiral vanes, so that the ice scraping and pushing direction of the outer screw is opposite to the ice scraping and pushing direction of the inner screw; the pitch of the inner spiral vanes is different from the pitch of the outer spiral vanes; the outer spiral vanes are provided with more than one piece, the front end of the outer spiral vanes is connected to the linkage sleeve, and the rear end of the outer spiral vanes is provided with a positioning ring, the outer spiral vanes, the linkage sleeve and the positioning ring are coaxially matched with each other; the inner spiral vanes are provided with more than one piece, the inner side of the inner spiral vanes is arranged on the driving shaft, the front end of the driving shaft extends out of the front end of the ice making inner cavity and is rotatably connected to the beverage cartridge, and the rear end of the driving shaft extends out of the rear end of the ice making inner cavity and is detachably drivingly connected to the motor shaft of the driving motor through the connecting shaft.

[0016] As a further specific solution, the snow melting machine further comprises a support frame and a control module, the beverage cartridge is detachably arranged on the support frame, and the evaporator and / or the power device is / are fixedly arranged on the support frame; the support frame is provided with an induction switch electrically connected to the control module, and the beverage cartridge triggers the induction switch after being installed in place; the rear end of the beverage cartridge is provided with an opening, the support frame is provided with a cartridge cover, and the cartridge cover detachably seals and closes the open end of the beverage cartridge after the beverage cartridge is installed in place.

[0017] As a further specific solution, the support frame is provided with a sliding groove on the left and right sides, and a locking piece is hingedly connected to the support frame, the locking piece being swingable relative to the support frame, and a locking hook being arranged on a swing end of the locking piece; the beverage cylinder is provided with a first sliding block and a second sliding block, the first sliding block and the second sliding block being respectively slidable on the sliding grooves; when the beverage cylinder is slid to a set position relative to the support frame, the open end of the beverage cylinder is covered by the cylinder cover, and at the same time, the second sliding block triggers the inductive switch, and in addition, the locking piece is rotated to hook the first sliding block.

[0018] As a further specific solution, the outer screw rod and the inner screw rod are rotatably arranged relative to the beverage cylinder, the beverage cylinder is provided with a feeding port communicating with the ice-making outer cavity, and the beverage solution enters the ice-making outer cavity and the ice-making inner cavity through the feeding port; the beverage cylinder is provided with a discharging port communicating with the ice-making outer cavity, and when the discharging port is opened, the ice slurry in the ice-making outer cavity is extruded out of the discharging port by rotating the outer screw rod.

[0019] The beneficial effects of the utility model are as follows:

[0020] The snow melting machine belongs to a household snow melting machine, and through structural innovation and optimization of the evaporator and improvement of the refrigeration working mode, the following effects are achieved: the refrigeration efficiency is improved without increasing the refrigeration power consumption, the cold quantity transmission loss is greatly reduced, the ice slurry is quickly made without long waiting time (2 liters of ice slurry can be made within ten minutes), the use effect of power saving, energy saving, quickness and flexibility is achieved, the needs of consumers for quickness and variability are met, the product use experience is improved, and in addition, the volume is small and the cost is low, so the household use is suitable.

[0021] Specifically:

[0022] The core heat exchange component of the refrigeration system is the evaporator, the traditional single-face refrigeration evaporator is improved into a ring-tube-shaped inner and outer two-face refrigeration evaporator, the improved evaporator is additionally provided with an inner refrigeration surface, so that the heat exchange area is greatly increased (about 77.37% increase), that is, the effective heat exchange area of the evaporator in contact with the beverage solution is greatly increased (about 77.37% expansion), after deducting the loss and the matching loss of the refrigeration system, the refrigeration efficiency is at least improved by more than 43%, and the refrigeration efficiency and the refrigeration capacity of the refrigeration system are greatly improved.

[0023] The cold energy generated by the evaporation of the refrigerant medium can directly act on the inner and outer refrigeration surfaces in contact with the beverage solution, greatly reducing the cold energy transmission loss; the evaporator with a ring-shaped double-layer structure is a double-layer stainless steel pipe structure, both ends of which are welded and sealed to leave only refrigerant leading-in and leading-out pipes, the closed double-layer stainless steel pipe interlayer space is a refrigerant evaporation cavity, a spiral-shaped air guide spiral sheet is fixedly arranged in the refrigerant evaporation cavity, the inner and outer sides of the air guide spiral sheet are close to the inner side walls of the refrigerant evaporation cavity, the air guide spiral sheet and the double-layer stainless steel pipe interlayer form a spiral-shaped refrigerant channel, one end of the spiral-shaped refrigerant channel is connected with the refrigerant leading-in pipe, and the other end is connected with the refrigerant leading-out pipe; when the refrigeration system works, the liquid refrigerant pressurized by the compressor enters the relatively large refrigerant channel through the leading-in pipe and is instantaneously depressurized and evaporated to exchange heat and refrigerate, the refrigerant absorbs the heat of the beverage solution outside the refrigerant evaporation cavity and changes into gaseous refrigerant medium, and finally flows out from the refrigerant leading-out pipe, returns to the compressor and starts the next refrigeration cycle; the evaporator cancels the intermediate medium (in the traditional structure, the cold energy needs to be first transmitted to the copper pipe winding and then to the evaporator surface), so that the refrigerant directly exchanges heat with the double-layer stainless steel pipe wall of the evaporator, and meanwhile, the contact surface between the copper pipe winding and the stainless steel pipe wall of the traditional evaporator is avoided to cause a large amount of cold energy transmission loss; by canceling the intermediate transmission medium, the cold energy transmission loss can be effectively reduced by at least 15%, the condenser of the structure shortens the ice slurry production time by more than 100% compared with the traditional product, and the ice slurry of 2 liters is shortened from 45 minutes to 21 minutes, and the refrigeration efficiency is improved by more than 100%.

[0024] The rear end (the end facing the power device) of the evaporator is in an open state, the inner screw rod and the outer screw rod are arranged on the two sides of the refrigerant evaporation cavity of the evaporator in linkage, the outer screw rod scrapes the ice crystals formed on the outer pipe wall of the evaporator and pushes the gradually formed ice slurry forward (in the direction of the ice slurry faucet) in the beverage cylinder, the inner screw rod scrapes the ice crystals formed on the inner pipe wall of the evaporator and pushes the gradually formed ice slurry backward, the ice slurry is extruded from the open rear end of the evaporator to enter the beverage cylinder, is pushed to the front end of the beverage cylinder by the outer screw rod, and is rolled into the inner pipe of the evaporator by the inner screw rod to repeat refrigeration; the ice slurry is extruded from the open rear end of the evaporator after being formed, and thus a circulating refrigeration working mode is formed, so that on the one hand, the self-melting of the semi-formed ice slurry absorbing the heat outside the cylinder can be avoided, and on the other hand, the refrigeration efficiency is higher and the prepared cold beverage ice slurry has a smaller water content. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a sectional view of an ice slurry preparation assembly in an embodiment of the utility model.

[0026] Figure 2 It is Figure 1 It is an enlarged view of A part.

[0027] Figure 3 It is a schematic view of disassembling a beverage cylinder in an embodiment of the utility model.

[0028] Figure 4 is a partial exploded view of the ice slush making assembly in an embodiment of the present application.

[0029] Figure 5 is a working principle diagram of the evaporator in an embodiment of the present application.

[0030] Figure 6 is a first direction sectional view of the ice slush making assembly in a working state in an embodiment of the present application.

[0031] Figure 7 is a second direction sectional view of the ice slush making assembly in a working state in an embodiment of the present application.

[0032] Figure 8 is an exploded view of the snow melting machine in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application will be further described below in conjunction with the drawings and embodiments.

[0034] Referring to Figures 1-7 The present embodiment relates to a household snow melting machine, which comprises a beverage cylinder 8 and an evaporator D. An ice making outer cavity 801 is arranged in the beverage cylinder 8, and the evaporator D is arranged in the ice making outer cavity 801. A beverage solution is stored in the ice making outer cavity 801, and the evaporator D is immersed in the beverage solution. The evaporator D further comprises an outer sleeve 9 and an inner sleeve 10. The outer sleeve 9 is arranged on the outer side of the inner sleeve 10 in a spaced manner. A cladding layer between the outer sleeve 9 and the inner sleeve 10 forms a loop-shaped refrigerant evaporation cavity D1. Low-temperature refrigerant medium produced by a refrigeration system is introduced into the refrigerant evaporation cavity D1 and transported from the front end to the rear end of the refrigerant evaporation cavity D1. The outer wall of the outer sleeve 9 forms an outer refrigeration surface 901, and the inner wall of the inner sleeve 10 forms an inner refrigeration surface 1001. The cold energy generated by evaporation of the refrigerant medium is directly transmitted to the outer refrigeration surface 901 and the inner refrigeration surface 1001. An ice making inner cavity D3 is arranged on the inner side of the inner sleeve 10 and open at the front and rear ends. The outer refrigeration surface 901 is in contact with the beverage solution in the ice making outer cavity 801, and the inner refrigeration surface 1001 is in contact with the beverage solution in the ice making inner cavity D3. The evaporator D is spaced apart from the front and rear ends of the beverage cylinder 8, so that the front end of the ice making outer cavity 801 is in communication with the front end of the ice making inner cavity D3, and the rear end of the ice making outer cavity 801 is in communication with the rear end of the ice making inner cavity D3. The beverage solution enters the ice making outer cavity 801 and the ice making inner cavity D3, respectively. Figure 2The cold energy generated by the evaporation of the refrigerant medium in the refrigerant evaporation cavity D1 is directly transmitted to the outer refrigeration surface 901 and the inner refrigeration surface 1001 through the corresponding inner and outer sleeves, so that the beverage solution on the outer refrigeration surface 901 and the inner refrigeration surface 1001 is frozen into ice crystals; the snow melting machine further comprises an outer screw 18 for scraping the ice crystals on the outer refrigeration surface 901 and pushing them forward, an inner screw 17 for scraping the ice crystals on the inner refrigeration surface 1001 and pushing them backward, and a power device 1 for driving the outer screw 18 and the inner screw 17 to rotate; the outer screw 18 is rotatably arranged in the ice-making outer cavity 801, and the inner screw 17 is rotatably arranged in the ice-making inner cavity D3; the outer screw 18 and the inner screw 17 cooperate with each other to make the beverage solution circulate into the ice-making inner cavity D3 and the ice-making outer cavity 801 to repeat ice making.

[0035] In the snow melting machine, the evaporator D is a ring-tube-shaped inner and outer refrigeration structure, which is additionally provided with an inner refrigeration surface 1001; the cold energy generated by the evaporation of the refrigerant medium in the refrigerant evaporation cavity D1 is simultaneously transmitted to the outer refrigeration surface 901 and the inner refrigeration surface 1001, so that ice crystals can be formed on the inner and outer surfaces of the evaporator D; compared with the traditional structure, the evaporator D increases the heat exchange area by about 77.37%, that is, the effective heat exchange area of the evaporator D in contact with the beverage solution increases by about 77.37%, which greatly improves the refrigeration efficiency and refrigeration capacity of the refrigeration system; in addition, all the cold energy generated by the evaporation of the refrigerant medium in the refrigerant evaporation cavity D1 can be directly transmitted to the inner and outer sleeves, compared with the traditional structure, the evaporator D cancels the intermediate transmission medium, thereby greatly reducing the transmission loss of cold energy; in addition, the outer screw 18 pushes the beverage solution forward, and the inner screw 17 pushes the beverage solution backward, fully utilizing the inner and outer refrigeration surfaces to form a circulating refrigeration refrigeration mode, which avoids the self-melting of the semi-finished ice slurry by absorbing the heat outside the barrel, and accelerates the formation of ice crystals of the beverage.

[0036] Further, in order to guide the refrigerant medium to be conveyed along a set track, the evaporator D further comprises a spiral extending gas guide spiral piece 15, which is fixedly arranged between the outer sleeve 9 and the inner sleeve 10, that is, the gas guide spiral piece 15 is located in the refrigerant evaporation cavity D1, the outer side of the gas guide spiral piece 15 is close to the inner wall of the outer sleeve 9, and the inner side of the gas guide spiral piece 15 is close to the outer wall of the inner sleeve 10, thereby dividing the refrigerant evaporation cavity D1 into a spiral refrigerant channel D2, and the refrigerant medium is conveyed along the spiral track of the refrigerant channel D2; the refrigerant medium directly acts on the outer refrigeration surface 901 and the inner refrigeration surface 1001 through the refrigerant channel D2, and exchanges heat with the beverage raw materials on the outer refrigeration surface 901 and the inner refrigeration surface 1001 respectively, that is, the beverage solution on the outer refrigeration surface 901 and the inner refrigeration surface 1001 can be frozen into ice crystals; since the inner and outer walls of the evaporator D both have heat exchange refrigeration effect, the refrigeration area is greatly increased, and the refrigeration efficiency is improved accordingly; the outer sleeve 9 and the inner sleeve 10 are stainless steel pipes with different inner diameters, and the outer sleeve 9 is intervally sleeved outside the inner sleeve 10.

[0037] Further, the two axial ends of the outer sleeve 9 and the two axial ends of the inner sleeve 10 are closedly connected with each other, so that the two axial ends of the refrigerant evaporation cavity D1 are closedly arranged, thereby ensuring the sealing of the refrigerant evaporation cavity D1 and preventing refrigerant medium from leaking; the refrigerant evaporation cavity D1 is provided with a refrigerant inlet pipe 21 for introducing refrigerant medium and a refrigerant outlet pipe 12 for discharging refrigerant medium; the inlet end of the refrigerant inlet pipe 21 extends to the front end of the evaporator D and communicates with one end of the refrigerant channel D2, and the liquid refrigerant medium enters one end of the refrigerant channel D2 through the refrigerant inlet pipe 21; the outlet end of the refrigerant outlet pipe 12 extends to the rear end of the evaporator D and communicates with the other end of the refrigerant channel D2, and the gaseous refrigerant medium flows out of the refrigerant channel D2 through the refrigerant outlet pipe 12; the refrigerant inlet pipe 21 and the refrigerant outlet pipe 12 are respectively inserted into the refrigerant evaporation cavity D1 through any axial sealing end.

[0038] Further, the evaporator D further comprises a first sealing edge 4 and a second sealing edge 16, the first sealing edge 4 is connected with the axial front end of the outer sleeve 9 and the axial front end of the inner sleeve 10 respectively, and the second sealing edge 16 is connected with the axial rear end of the outer sleeve 9 and the axial rear end of the inner sleeve 10 respectively, and the refrigerant inlet pipe 21 and the refrigerant outlet pipe 12 respectively extend into the refrigerant evaporation cavity D1 through the second sealing edge 16 (or the first sealing edge 4) in the axial direction. Specifically, the first sealing edge 4 is integrally outwardly formed on the front end of the axial line of the inner sleeve 10, the outer end of the first sealing edge 4 is welded with the axial front end of the outer sleeve 9, the second sealing edge 16 is an independent annular component, and the second sealing edge 16 is welded with the axial rear end of the outer sleeve 9 and the axial rear end of the inner sleeve 10 respectively, the second sealing edge 16 is provided with an opening for inserting the refrigerant inlet pipe 21 and the refrigerant outlet pipe 12, and the refrigerant inlet pipe 21 and the refrigerant outlet pipe 12 are sealingly matched with the second sealing edge 16.

[0039] In the embodiment, the cold energy generated by the evaporation of the refrigerant medium can directly act on the inner and outer refrigeration surfaces in contact with the beverage solution, greatly reducing the loss caused by the cold energy transmission process; the evaporator D is a double-layer stainless steel pipe structure, the ice-making outer cavity 801 located on the outer side of the evaporator D is provided with an outer screw 18, and the ice-making inner cavity D3 located on the inner side of the evaporator D is provided with an inner screw 17; when the refrigeration system is working, the liquid refrigerant medium pressurized by the compressor 22 enters the relatively large refrigerant evaporation cavity D1 through the refrigerant inlet pipe 21 to be instantaneously depressurized and evaporated for heat exchange and refrigeration, the liquid refrigerant medium absorbs the heat of the beverage solution outside the refrigerant evaporation cavity D1 and is phase-changed into gaseous refrigerant medium, and finally flows out from the refrigerant outlet pipe 12 to return to the compressor 22 for the next round of refrigeration cycle; the evaporator D cancels the traditional copper pipe winding, so that the refrigerant medium directly exchanges heat with the outer sleeve 9 and the inner sleeve 10 (double-layer stainless steel pipe wall), thereby effectively avoiding the small contact surface between the copper pipe winding and the side wall and causing a large amount of cold energy transmission loss, that is, the evaporator D can realize zero loss of cold energy and greatly improve the refrigeration efficiency.

[0040] Further, the power device 1 in the embodiment is a driving motor, the motor shaft of the driving motor is detachably connected with the rear end of the inner screw rod 17 through the shaft sleeve 3, the front end of the inner screw rod 17 is connected with the front end of the outer screw rod 18, and the front end of the inner screw rod 17 and / or the front end of the outer screw rod 18 is detachably connected with the beverage cylinder 8. The outer screw rod 18 and the inner screw rod 17 are coaxially matched with each other, and the driving motor drives the outer screw rod 18 and the inner screw rod 17 to rotate in the same direction.

[0041] Further, the outer screw rod 18 in the embodiment comprises a linkage sleeve 1802, and the inner screw rod 17 comprises a driving shaft 1702. The front end of the driving shaft 1702 is detachably coaxially inserted with the linkage sleeve 1802, and the rear end of the driving shaft 1702 is detachably coaxially inserted with the shaft sleeve 3. The inner wall of the beverage cylinder 8 is provided with a convex shaft 806, the front end of the driving shaft 1702 is provided with a shaft hole 1703, the front end of the driving shaft 1702 penetrates through the linkage sleeve 1802, and the convex shaft 806 is detachably rotatably inserted with the shaft hole 1703.

[0042] Further, the outer screw rod 18 in the embodiment is provided with two outer spiral blades 1801, the inner side of the two outer spiral blades 1801 is close to the outer refrigeration surface 901, so as to scrape the ice crystals on the outer refrigeration surface 901. The inner screw rod 17 is provided with two inner spiral blades 1701, the outer side of the inner spiral blades 1701 is close to the inner refrigeration surface 1001, so as to scrape the ice crystals on the inner refrigeration surface 1001. The spiral extension direction of the outer spiral blade 1801 is opposite to the spiral extension direction of the inner spiral blade 1701. The outer screw rod 18 and the inner screw rod 17 rotate in the same direction, so that the ice scraping and pushing direction of the outer screw rod 18 is opposite to the ice scraping and pushing direction of the inner screw rod 17. In addition, the spiral extension direction of the outer spiral blade 1801 can be the same as the spiral extension direction of the inner spiral blade 1701, the outer screw rod 18 and the inner screw rod 17 are reversely rotated, so that the ice scraping and pushing direction of the outer screw rod 18 is opposite to the ice scraping and pushing direction of the inner screw rod 17. The pitch of the inner spiral blade 1701 is different from the pitch of the outer spiral blade 1801. Based on the different pitches, the multi-dimensional circulating refrigeration system driven by the inner screw rod 17 and the outer screw rod 18 realizes the precise and efficient heat exchange and refrigeration process of the beverage solution in the customized ice-making outer cavity 801 and the ice-making inner cavity D3 through the unique phase difference control and pitch difference.

[0043] Further, the front ends of the two outer spiral blades 1801 are connected with the linkage shaft sleeve 1802, and the rear ends of the two outer spiral blades 1801 are provided with the positioning ring 1804, and the outer spiral blade 1801, the linkage shaft sleeve 1802 and the positioning ring 1804 are coaxially matched with each other; the two inner spiral blades 1701 are coaxially matched and jointly connected with the driving shaft 1702 at the inner sides, the front end of the driving shaft 1702 extends out of the front end of the ice-making inner cavity D3 and is rotationally connected with the beverage cylinder 8, the rear end of the driving shaft 1702 extends out of the rear end of the ice-making inner cavity D3 and is detachably drivingly connected with the motor shaft of the driving motor through the connecting shaft 3. The asymmetrically meshed inner screw 17 and outer screw 18 structure is adopted, the flow distribution and spinning pushing mechanism are combined, the beverage solution is circulated and cooled between the ice-making outer cavity 801 and the ice-making inner cavity D3 with special heat exchange, and efficient smoothie making is realized; in addition, the reverse spinning mechanism of the inner screw 17 and the outer screw 18 is used, and the evaporator cavity with gradient thermal conductivity is cooperated to realize nonlinear and dynamic cooling of the beverage solution on the circulation path, which is different from the uniform cooling mode of the traditional screw driving.

[0044] Referring to Figure 6 and Figure 7 , the rear end of the evaporator D is in an open state, and the inner screw 17 and the outer screw 18 are arranged on the inner and outer sides of the evaporator D and are interconnected, the outer screw 18 scrapes the ice crystals on the outer cooling surface 901 and pushes the gradually formed smoothie in the ice-making outer cavity 801 forward, the inner screw 17 scrapes the ice crystals on the inner cooling surface 1001 and pushes the gradually formed smoothie in the ice-making inner cavity D3 backward, the smoothie is extruded from the open rear end of the evaporator D and enters the ice-making outer cavity 801, the smoothie is pushed by the outer screw 18 to the front end of the ice-making outer cavity 801, and then is rolled into the ice-making inner cavity D3 by the inner screw 17 to repeat cooling; the smoothie is extruded from the open rear end of the evaporator D after being formed, and thus a circulating cooling working mode is formed, which not only has higher cooling efficiency but also has less water content in the prepared cold beverage smoothie.

[0045] Specifically, the beverage solution enters the ice-making outer cavity 801 at the front end of the evaporator D under the reverse screw driving force of the inner screw 17; in the limited space of the ice-making inner cavity D3, the beverage solution exchanges heat with the evaporator D efficiently, based on the principles of heat conduction and convection heat transfer, the heat in the beverage solution is continuously transferred to the evaporator D to realize the refrigeration process, and slowly moves backward under the pulling of the inner screw 17. When the beverage solution leaves the ice-making inner cavity D3, it immediately enters the ice-making outer cavity 801 under the driving of the forward propulsion force of the outer screw 18; in the ice-making outer cavity 801, the beverage solution again undergoes the refrigeration process and moves forward by using the low-temperature environment of the evaporator D; then, the beverage solution is pulled into the ice-making inner cavity D3 by the inner screw 17 again, and the above refrigeration process is repeated. Through this refrigeration cycle circulating between the ice-making inner cavity D3 and the ice-making outer cavity 801, the beverage solution continuously exchanges heat until the heat inside the beverage solution is fully removed and the whole is changed into a slush-like substance, completing the entire refrigeration process.

[0046] Further, the outer screw 18 and the inner screw 17 are rotatably arranged relative to the beverage cylinder 8, the beverage cylinder 8 is provided with a feed inlet 802 communicating with the ice-making outer cavity 801 at the top, and the beverage solution enters the ice-making outer cavity 801 and the ice-making inner cavity D3 through the feed inlet 802; the beverage cylinder 8 is provided with a feed cover 24 for opening or closing the feed inlet 802 at the top; the beverage cylinder 8 is provided with a discharge outlet 803 communicating with the ice-making outer cavity 801 at the front end, and when the discharge outlet 803 is opened, the ice slurry in the ice-making outer cavity 801 is extruded out of the discharge outlet 803 by the rotation of the outer screw 18.

[0047] Further, the snow melting machine also includes a support frame 6 and a control module 11, the beverage cylinder 8 is detachably arranged on the support frame 6, and the evaporator D and the power device 1 are fixedly arranged on the support frame 6; the support frame 6 is provided with an induction switch 19 electrically connected to the control module 11, and the beverage cylinder 8 triggers the induction switch 19 after being installed in place, so that the snow melting machine can work normally; the beverage cylinder 8 is provided with an opening at the rear end, and the support frame 6 is provided with a cylinder cover 20, which can detachably seal and close the opening end of the beverage cylinder 8 after the beverage cylinder 8 is installed in place.

[0048] Specifically, the support frame 6 includes two side plates 602 arranged in pairs on the left and right sides, and a sliding groove 601 is arranged on each of the left and right side plates 602. In this embodiment, the inductive switch 19 is a micro switch electrically connected to a circuit, and the micro switch is fixedly arranged on any one of the side plates 602. The movable contact of the micro switch corresponds to the sliding groove 601. The support frame 6 is hingedly connected with a locking piece 23 at the rear end, and the locking piece 23 is swingable relative to the support frame 6. A locking hook 2301 is arranged at one swing end of the locking piece 23. The beverage cylinder 8 is provided with a first sliding block 804 and a second sliding block 805 on the same side and away from each other. The first sliding block 804 and the second sliding block 805 are respectively slidable on the sliding groove 601, so that the beverage cylinder 8 is slidable relative to the support frame 6. When the beverage cylinder 8 is slid relative to the support frame 6 to a set position, the opening end at the rear side of the beverage cylinder 8 is covered by the cylinder cover 20, and the cylinder cover 20 is sealingly connected with the beverage cylinder 8 through the sealing piece 7, so as to ensure the sealing of the ice-making outer cavity 801. At the same time, the second sliding block 805 directly or through a transmission member triggers the movable contact of the micro switch, so that the circuit in which the micro switch is located is conducted, and the snow melting machine is enabled to work normally. In addition, the locking hook 2301 can be hooked on the first sliding block 804 by rotating the locking piece 23, so as to prevent the beverage cylinder 8 from being loosened. In the locked state, the user can disengage the locking hook 2301 from the first sliding block 804 by rotating the locking piece 23. At this time, the user can disassemble the beverage cylinder 8 for cleaning. After the beverage cylinder 8 is disassembled, the evaporator D is exposed as a whole, and the outer screw rod 18 and the inner screw rod 17 are respectively detachable, so as to facilitate the user to clean each component.

[0049] Further, the power device 1 is fixedly connected with the rear end of the support frame 6 through the fixed support 2. The evaporator D is fixedly connected with the cylinder cover 20 through a plurality of fixing bolts 14, so that the evaporator D is fixed in the ice-making outer cavity 801. The cylinder cover 20 is provided with a temperature controller 13, and a probe of the temperature controller 13 extends into the ice-making outer cavity 801 to detect the temperature in the ice-making outer cavity 801. The temperature controller is electrically connected with the control module 11.

[0050] Further, referring to Figure 8 The refrigeration system in the snow melting machine includes an evaporator D, a compressor 22, a condenser 25 and a drying filter 26 connected in sequence. The condenser 25 is provided with a fan 27 on one side, and the fan 27 is electrically connected with the control module 11 and is used for cooling and heat dissipation of the condenser 25. A refrigerant inlet pipe 21 is connected with the drying filter 26, and a refrigerant outlet pipe 12 is connected with the compressor 22. The machine shell of the snow melting machine includes a machine shell panel 28, a left shell body 29, a right shell body 30 and a machine shell rear cover 31.

[0051] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency energy-saving snow melting machine, comprising a beverage cylinder (8) and an evaporator (D), an ice-making outer cavity (801) is arranged in the beverage cylinder (8), and the evaporator (D) is arranged in the ice-making outer cavity (801); characterized in that: The evaporator (D) comprises an outer sleeve (9) and an inner sleeve (10), the outer sleeve (9) is spacedly sleeved outside the inner sleeve (10), a layer between the outer sleeve (9) and the inner sleeve (10) forms a loop-shaped refrigerant evaporation cavity (D1), the refrigerant medium is introduced into the refrigerant evaporation cavity (D1) and is transported from the front end to the rear end of the refrigerant evaporation cavity (D1); the outer wall of the outer sleeve (9) forms an outer refrigeration surface (901), the inner wall of the inner sleeve (10) forms an inner refrigeration surface (1001), and the cold energy generated by the evaporation of the refrigerant medium is directly transmitted to the outer refrigeration surface (901) and the inner refrigeration surface (1001); the inner sleeve (10) is internally provided with an ice-making inner cavity (D3) which is open at the front end and the rear end, the evaporator (D) is spaced from the beverage cylinder (8) at the front end and the rear end, the front end of the ice-making outer cavity (801) is communicated with the front end of the ice-making inner cavity (D3), the rear end of the ice-making outer cavity (801) is communicated with the rear end of the ice-making inner cavity (D3), and the beverage solution enters the ice-making outer cavity (801) and the ice-making inner cavity (D3) respectively; the snow melting machine further comprises an outer screw (18) for scraping the ice crystals on the outer refrigeration surface (901) and pushing them forward, an inner screw (17) for scraping the ice crystals on the inner refrigeration surface (1001) and pushing them backward, and a power device (1) for driving the outer screw (18) and the inner screw (17) to rotate; the outer screw (18) and the inner screw (17) cooperate with each other to make the beverage solution circulate into the ice-making inner cavity (D3) and the ice-making outer cavity (801) to repeatedly make ice. ​ 2. The snow melter of claim 1, wherein: The evaporator (D) further comprises a spiral extending air guide spiral piece (15), the air guide spiral piece (15) is arranged between the outer sleeve (9) and the inner sleeve (10); the outer side of the air guide spiral piece (15) is close to the inner wall of the outer sleeve (9), and the inner side of the air guide spiral piece (15) is close to the outer wall of the inner sleeve (10), so that the refrigerant evaporation cavity (D1) is divided into a spiral refrigerant channel (D2), and the refrigerant medium is transported along the refrigerant channel (D2).

3. The snow melter of claim 2, wherein: The two axial ends of the outer sleeve (9) and the two axial ends of the inner sleeve (10) are closedly connected with each other, so that the two axial ends of the refrigerant evaporation cavity (D1) are closedly arranged; the refrigerant evaporation cavity (D1) is internally provided with a refrigerant inlet pipe (21) for introducing the refrigerant medium and a refrigerant outlet pipe (12) for leading out the refrigerant medium, the inlet end of the refrigerant inlet pipe (21) extends to the front end of the evaporator (D) and is communicated with one end of the refrigerant channel (D2), and the outlet end of the refrigerant outlet pipe (12) extends to the rear end of the evaporator (D) and is communicated with the other end of the refrigerant channel (D2).

4. The snow melter of claim 3, wherein: The evaporator comprises a first sealing edge (4) and a second sealing edge (16), the first sealing edge (4) is connected with the axial front end of the outer sleeve (9) and the axial front end of the inner sleeve (10) respectively, the second sealing edge (16) is connected with the axial rear end of the outer sleeve (9) and the axial rear end of the inner sleeve (10) respectively, the refrigerant inlet pipe (21) extends into the refrigerant evaporation cavity (D1) axially through the first sealing edge (4) or the second sealing edge (16), and the refrigerant outlet pipe (12) extends into the refrigerant evaporation cavity (D1) axially through the first sealing edge or the second sealing edge.

5. The snow melter of claim 1, wherein: The power device (1) is a driving motor, the motor shaft of the driving motor is detachably connected with the rear end of the inner screw rod (17) through the shaft sleeve (3), the front end of the inner screw rod (17) is connected with the front end of the outer screw rod (18), and the front end of the inner screw rod (17) and / or the front end of the outer screw rod (18) is detachably connected with the beverage cylinder (8). The outer screw rod (18) and the inner screw rod (17) are coaxially matched with each other, and the driving motor drives the outer screw rod (18) and the inner screw rod (17) to rotate in the same direction.

6. The snow melter of claim 5, wherein: The outer screw rod (18) comprises a linkage sleeve (1802), and the inner screw rod (17) comprises a driving shaft (1702); the front end of the driving shaft (1702) is detachably coaxially inserted into the linkage sleeve (1802), and the rear end of the driving shaft (1702) is detachably coaxially inserted into the shaft sleeve (3); a convex shaft (806) is arranged on the inner wall of the beverage cylinder (8), the front end of the driving shaft (1702) is provided with a shaft hole (1703), the front end of the driving shaft (1702) penetrates through the linkage sleeve (1802), and the convex shaft (806) is detachably rotatably inserted into the shaft hole (1703).

7. The snow melter of claim 6, wherein: The outer screw rod (18) is provided with outer spiral blades (1801), and the inner side of the outer spiral blades (1801) is close to the outer refrigeration surface (901); the inner screw rod (17) is provided with inner spiral blades (1701), and the outer side of the inner spiral blades (1701) is close to the inner refrigeration surface (1001); the spiral extension direction of the outer spiral blades (1801) is opposite to the spiral extension direction of the inner spiral blades (1701), so that the ice scraping and pushing direction of the outer screw rod (18) is opposite to the ice scraping and pushing direction of the inner screw rod (17); the pitch of the inner spiral blades (1701) is different from the pitch of the outer spiral blades (1801); the outer spiral blades (1801) are provided with more than one piece, the front end of the outer spiral blades (1801) is connected with the linkage sleeve (1802), the rear end of the outer spiral blades (1801) is provided with a positioning ring (1804), and the outer spiral blades (1801), the linkage sleeve (1802) and the positioning ring (1804) are coaxially matched with each other; the inner spiral blades (1701) are provided with more than one piece, the inner side of the inner spiral blades (1701) is arranged on the driving shaft (1702), the front end of the driving shaft (1702) extends out of the front end of the ice making inner cavity (D3) and is rotatably connected with the beverage cylinder (8), and the rear end of the driving shaft (1702) extends out of the rear end of the ice making inner cavity (D3) and is detachably connected with the motor shaft of the driving motor through the connecting shaft (3).

8. The snow melter of claim 1, wherein: The beverage cylinder (8) is detachably arranged on the supporting frame (6), and the evaporator (D) and / or the power device (1) is fixedly arranged on the supporting frame (6); the supporting frame (6) is provided with an inductive switch (19) electrically connected with the control module (11), and the inductive switch (19) is triggered after the beverage cylinder (8) is installed in place; the rear end of the beverage cylinder (8) is provided with an opening, the supporting frame (6) is provided with a cylinder cover (20), and the opening end of the beverage cylinder (8) is detachably sealed and closed by the cylinder cover (20) after the beverage cylinder (8) is installed in place.

9. The snow melter of claim 8, wherein: Support frame (6) left and right sides are respectively provided with a sliding slot (601), support frame (6) is hingedly connected with a lock piece (23), the lock piece (23) is swingable relative to the support frame (6), and a locking hook (2301) is arranged on one swing end of the lock piece (23);The beverage cylinder (8) is provided with a first sliding block (804) and a second sliding block (805), and the first sliding block (804) and the second sliding block (805) are respectively slidably arranged in the sliding slot (601); When the beverage cylinder (8) is slid to a set position relative to the support frame (6), the open end of the beverage cylinder (8) is covered with the cylinder cover (20), and at the same time, the second sliding block (805) triggers the inductive switch (19), and in addition, the rotating lock piece (23) makes the locking hook (2301) hook the first sliding block (804).

10. The snow melter of claim 1, wherein: The outer screw rod (18) and the inner screw rod (17) are rotatably arranged relative to the beverage cylinder (8), the beverage cylinder (8) is provided with a feeding port (802) communicating with the ice-making outer cavity (801), and the beverage solution enters the ice-making outer cavity (801) and the ice-making inner cavity (D3) through the feeding port (802);The beverage cylinder (8) is provided with a discharge port (803) communicating with the ice-making outer cavity (801) at the front end, and when the discharge port (803) is opened, the ice slurry in the ice-making outer cavity (801) is extruded out of the discharge port (803) at this time by rotating the outer screw rod (18).

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