Evaporator and efficient snow melting machine

Abstract

The utility model relates to an evaporator and a snow melting machine efficient in use, the evaporator comprises a barrel and a barrel cover for sealing an opening of the barrel, the barrel comprises an inner layer and an outer layer which are connected in a sealed mode, a refrigerant circulation cavity integrally extending is formed between the inner layer and the outer layer, and the evaporator communicates with the outside through an inlet pipe and a return pipe. The snow melting machine comprises a machine shell, a refrigeration assembly, a power assembly and a processing module, the refrigeration assembly, the power assembly and the processing module are located in the machine shell, the processing module comprises a stirring bin, the evaporator and a stirring paddle, the rear end of the evaporator is fixedly connected with the stirring bin, the refrigerant circulation cavity is communicated with the refrigeration assembly through an inlet pipe and a backflow pipe, and the stirring paddle is arranged outside the evaporator in a sleeving mode. According to the evaporator, the outer layer and the inner layer directly form the integrally-extending refrigerant circulation cavity, after refrigerant is injected into the refrigerant circulation cavity, the refrigerant can be quickly and uniformly dispersed in the refrigerant circulation cavity, then a uniform refrigeration face is formed on the outer surface of the outer layer of the evaporator, the refrigeration area of the evaporator is increased, and the refrigeration efficiency of the evaporator is improved. And the refrigeration efficiency of the snow melting machine is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to snow melting machine technical field especially, relates to an evaporimeter and apply the snow melting machine of this evaporimeter. BACKGROUND

[0002] With the continuous improvement of people's living standards, more diversified life is pursued, and therefore more refined and higher quality food materials are needed in life. The snow melting machine is a device capable of providing a semi-solid slush-shaped beverage, which can provide a beverage in a state between a liquid beverage and a solid ice block for a user. The existing snow melting machine is usually only suitable for commercial use due to the volume and processing capacity limitations. The existing snow melting machine usually has a base, a storage cavity for storing a liquid beverage is arranged on the base, an evaporimeter for cooling the beverage and a stirring paddle for stirring the beverage are arranged in the storage cavity, a driving motor for driving the stirring paddle to rotate is arranged in the base, the temperature of the beverage stored in the storage cavity gradually decreases to the freezing point under the action of the evaporimeter, forming an ice-water mixture, and the mixed snow melt is formed under the continuous stirring of the stirring paddle. The existing snow melting machine is limited by the volume and the efficiency of the refrigeration, and is not convenient for use in a general home environment.

[0003] Based on the above-mentioned needs, the existing technical solution directly reduces the volume of each functional module of the snow melting machine, such as the stirring bin, the evaporimeter and the stirring paddle of the refrigeration assembly, which are compressed in proportion, thereby realizing small-volume refrigeration processing. However, the proportionally reduced refrigeration assembly has the technical problem of poor refrigeration efficiency, especially the evaporimeter. If the volume of the evaporimeter is too small, the condensation channel located in the evaporimeter cannot be set, especially the inlet pipe for providing refrigerant to the evaporimeter and the return pipe for returning refrigerant, which need to be set to a certain inner diameter. The evaporimeter with too small volume cannot set the inlet pipe and the return pipe. Moreover, due to the short distance of the condensation channel, the refrigeration cannot be effectively realized. If sufficient condensation channels are set, the volume of the evaporimeter will inevitably increase, and the overall volume of the refrigeration assembly will also increase, which cannot provide the user with a truly small and convenient evaporimeter and snow melting machine, especially for home use. SUMMARY

[0004] In view of the defects and deficiencies of the existing technology, the purpose of the utility model is to provide an efficient evaporimeter and snow melting machine to solve the problems of large volume of the existing evaporimeter, poor refrigeration efficiency of the one-way flow inlet pipe in the evaporimeter, difficulty in producing the inlet pipe of the evaporimeter, and space and structure waste caused by simple function of the snow melting machine.

[0005] To solve the above technical problems, the application provides an evaporator, which comprises a cylinder and a cylinder cover for closing the front end opening of the cylinder, the cylinder comprises an inner layer and an outer layer which are closedly connected, and a refrigerant flow cavity extending integrally is formed between the inner layer and the outer layer, the evaporator is further provided with an inlet pipe and a return pipe which are in communication with the outside, refrigerant flows into the refrigerant flow cavity through the inlet pipe and flows out through the return pipe, and the inlet pipe extends into the front end of the refrigerant flow cavity from the rear end.

[0006] According to the application, the evaporator is provided with a cylinder and a cylinder cover for closing the front end opening of the cylinder, the cylinder comprises an inner layer and an outer layer which are closedly connected, and a refrigerant flow cavity extending integrally is formed between the inner layer and the outer layer. Compared with the prior art evaporator which needs to be provided with a spiral condensation channel in the cylinder, the application directly forms a refrigerant flow cavity extending integrally, and the external refrigerant can directly diffuse in the refrigerant flow cavity after flowing into the refrigerant flow cavity through the inlet pipe, and then exchanges heat with the food material outside the evaporator through the outer layer, and then flows back through the return pipe. On the one hand, the external refrigerant can directly exchange heat with the food material after flowing into the refrigerant flow cavity, which reduces the efficiency reduction caused by the refrigerant continuously circulating in the condensation channel in the prior art. On the other hand, the refrigerant flow cavity is directly formed between the outer layer and the inner layer, and there is no technical problem of gap between the walls of the spiral inlet pipe in the prior art. When the external food material contacts the outer layer, the area of heat exchange is larger, the efficiency of heat exchange is higher, the heat exchange is more uniform, and the preparation of the food material is more uniform. Therefore, under the premise of the same area of the cylinder, the evaporator of the application can realize the cooking and processing of the food material faster. Or, under the premise of the same refrigeration speed, the application can realize the corresponding processing under the premise of smaller area and volume. In particular, due to the improvement of the efficiency of the evaporator, the production speed of the corresponding snow melting machine is accelerated, and the heat exchange between the snow melting product and the external space is reduced, thereby reducing the flux loss of the corresponding snow melting machine. Therefore, the application can provide an evaporator and a corresponding snow melting machine with fast processing speed and low energy consumption. In particular, under the premise of ensuring normal processing, the application can reduce the volume of the evaporator to provide an evaporator and a snow melting machine which particularly meet the use environment of a family.

[0007] As an optional solution, the inner layer and the outer layer are both provided in the form of a ring-shaped cylinder, the front end and the rear end of the inner layer and the outer layer are closedly connected, and the interlayer of the inner layer and the outer layer forms the refrigerant flow cavity, and the inlet pipe extends into the front end of the refrigerant flow cavity from the rear end of the cylinder.

[0008] The inner layer and the outer layer are arranged in a cylindrical shape, facilitating the production and processing of the inner layer and the outer layer, and the front end and the rear end of the inner layer and the outer layer are directly closed and connected to form the refrigerant flow cavity between the inner layer and the outer layer. The production of the cylinder is simple and efficient. Since the cylinder does not need a spiral condensation channel, the risk of damage to the condensation channel during production is avoided, which can cause the evaporator to fail. The inner layer and the outer layer are connected and closed, which ensures the uniform thickness of the refrigerant flow cavity itself, so that the cooling of the evaporator is uniform and the cooling efficiency is high. For the cylindrical evaporator, the rear end is usually fixedly connected to the snow melting machine, and the inlet pipe is arranged to extend into the cold and hot flow cavity from the rear end of the cylinder, which facilitates the production and processing of the evaporator itself and the assembly of the evaporator and the snow melting machine.

[0009] As an optional solution, the length of the inlet pipe extending into the refrigerant flow cavity is not less than 1 / 2 of the depth of the refrigerant flow cavity.

[0010] In this way, the inlet pipe can extend to the front end of the refrigerant flow cavity, and the refrigerant flowing from the inlet pipe can be injected into the front end of the evaporator to exchange heat with the food material outside the outer layer more quickly, thereby improving the refrigeration efficiency.

[0011] As an optional solution, the inlet pipe is located on the lower side of the cylinder; or / and, the return pipe is located on the upper side of the cylinder.

[0012] Generally, after the refrigerant exchanges heat with the food material, the form of the refrigerant changes, for example, from liquid to gas. By arranging the inlet pipe on the lower side of the cylinder, the injected refrigerant exchanges heat with the food material on the lower side, ensuring that the food material on the bottom side of the evaporator can also be efficiently cooled and processed. As the form of the refrigerant changes and moves upward, it can further exchange heat with the food material on the outer periphery of the evaporator to realize the processing of the food material. In this way, the refrigeration efficiency of the evaporator is higher, and the refrigeration is more uniform, especially ensuring that the food material on the bottom of the evaporator can also be fully cooled and processed. Correspondingly, after the refrigerant completes heat exchange in the refrigerant flow cavity, it usually changes from liquid to gas due to the decrease in density, and the refrigerant concentrates on the upper part. By arranging the return pipe on the upper side of the cylinder, more refrigerant can be ensured to flow back through the return pipe. In particular, by arranging the inlet pipe on the lower side of the cylinder and the return pipe on the upper side of the cylinder, refrigerant that has not yet exchanged heat cannot directly flow back through the return pipe, which makes the heat exchange of the refrigerant more sufficient, thereby improving the refrigeration efficiency of the evaporator. In addition, the arrangement of the inlet pipe and the return pipe on the lower side and the upper side respectively also ensures the structural balance of the cylindrical evaporator, avoiding local stress concentration.

[0013] As an optional solution, the inlet pipe is provided with a plurality of branch outlets at the front end of the refrigerant flow cavity, and the outlets of the plurality of branch outlets are oriented in different directions.

[0014] The plurality of branch outlets at the front end of the inlet pipe, especially the different orientations of the plurality of branch outlets in the refrigerant flow cavity, enable the refrigerant flowing from the inlet pipe to be quickly and uniformly distributed in the refrigerant flow cavity, thereby improving the refrigeration effect of the evaporator. In general, the refrigerant injected from the inlet pipe is in a high-pressure shape, and a single outlet will concentrate local injection, causing local overcooling. The plurality of branch outlets can reduce the pressure at a single branch outlet, thereby avoiding local overcooling. Moreover, the different orientations of the plurality of branch outlets enable the inlet pipe to be subjected to multiple reaction forces in different directions, and the multiple reaction forces cancel each other out, thereby avoiding poor reliability of the inlet pipe due to excessive reaction force.

[0015] As an optional solution, the return pipe is arranged at the rear end of the cylinder to communicate with the refrigerant flow cavity.

[0016] For the return pipe, the refrigerant after heat exchange is collected. In order to recover as much refrigerant in the refrigerant flow cavity as possible, the return pipe is arranged at the rear end of the cylinder, so that more refrigerant in the refrigerant flow cavity can flow back through the return pipe. In particular, under the premise that the cold shrink pipe extends into the refrigerant flow cavity, the refrigerant flows back from the front end to the rear end of the refrigerant flow cavity, thereby achieving heat exchange with the food material outside the outer layer and ensuring that the refrigerant flows back through the return pipe from the rear end.

[0017] As an optional solution, the front end of the cylinder is provided with a bending towards the center, and the refrigerant flow cavity forms a front cavity extending in the radial direction at the front end of the cylinder.

[0018] The evaporator in the prior art needs to set a spiral inlet pipe to form a channel for refrigerant flow, but the spiral inlet pipe is complex to set and is not easy to set a more complex shape. The refrigerant flow cavity in the present application only relies on the shape of the barrel, i.e. the outer layer and the inner layer, and can be set to have different shapes according to different application scenarios to meet various cooling processing requirements. Preferably, the barrel is provided with a bending towards the center at the front end, so that the refrigerant flow cavity forms a front cavity extending to the center of the barrel at the front end. When external refrigerant is injected into the refrigerant flow cavity through the inlet pipe, the refrigerant can be quickly and uniformly injected into the front cavity to realize cooling processing of food materials located outside the front cavity and can increase the cooling area of the evaporator to improve the refrigeration efficiency of the evaporator. The outer layer can also be set to have different shapes according to the specific form of the product to which the evaporator is applied, such as a snow melting machine. For example, the cross section of the outer layer of the evaporator along the axial direction can be directly set to be conical, elliptical, multi-stage, etc., and the corresponding inner layer only needs to meet the requirement of being able to form the refrigerant flow cavity with the outer layer. Furthermore, since the refrigerant flow cavity is directly formed by the outer layer and the inner layer, the outer layer and the inner layer can be provided with a rounded corner at the position with the bending to reduce the edges and corners of the outer surface of the evaporator and avoid food materials remaining on the outer surface of the evaporator.

[0019] As an optional solution, the inner layer and the barrel cover jointly form a mounting cavity, and the evaporator is further provided with an NTC located in the mounting cavity and arranged on the barrel cover.

[0020] The main purpose of the evaporator is heat exchange to cool food materials arranged outside the outer layer, but the snow melting machine using the evaporator also needs to monitor the cooking state of the food materials. The mounting cavity is directly formed by the inner layer and the barrel cover, so that the outer part of the evaporator is formed by the outer layer and the barrel cover, which can realize higher refrigeration efficiency and has an integral smooth outer surface, so that food materials are not easy to remain and accumulate on the outer surface of the evaporator. The refrigerant flow cavity is formed between the outer layer and the inner layer; further, the inner cavity is formed between the inner layer and the barrel cover, and other components of the evaporator and the snow melting machine, such as the NTC for monitoring the temperature of food materials, are mounted in the mounting cavity. The barrel cover extends into the cooking cavity of the snow melting machine or is attached to the inner side wall of the barrel cover to monitor the cooking process, so that the snow melting machine can better complete the cooking process.

[0021] As an optional solution, the mounting cavity is further provided with a heat preservation filling material.

[0022] For the evaporator, the food material in contact with the outer layer exchanges heat with the refrigerant, thereby achieving cooling processing of the food material, but the inner layer does not contact the food material, but the inner layer also has heat loss. By arranging the heat preservation filling material in the installation cavity, on the one hand, the fixation of the NTC and the like structure is ensured, and the installation reliability of the NTC is ensured; on the other hand, the heat preservation filling material avoids the flux loss caused by the cooling of the gas in the installation cavity, and improves the heat conversion efficiency of the evaporator.

[0023] Correspondingly, the application also provides a high-efficiency snow melting machine, which comprises a shell, a refrigeration assembly and a power assembly arranged in the shell, and a processing module arranged on the shell, wherein the processing module comprises a stirring bin, an evaporator arranged in the stirring bin, and a stirring paddle, the evaporator adopts the evaporator described in the foregoing technical solution, the rear end of the evaporator is fixedly connected with the stirring bin, and the refrigerant flow-through cavity is in communication with the refrigeration assembly through the inlet pipe and the return pipe.

[0024] Since the evaporator forms an integrated and complete refrigerant flow-through cavity through the outer layer and the inner layer, the refrigeration area of the outer layer of the evaporator is larger and the refrigeration efficiency is higher, so that the cooling processing requirement of the food material can be met by a smaller evaporator and stirring bin. Due to the increase of the effective refrigeration area of the outer layer, the effective utilization rate of the evaporator is improved, so that the requirement of food material processing can be met under the premise of a small-volume stirring bin and evaporator, and finally a snow melting machine product with small size, convenient operation and high processing efficiency is provided for users to better meet the requirement of the household use environment. Of course, for a general snow melting machine product using this scheme, due to the improvement of the refrigeration efficiency of the evaporator itself, the time of single cooking processing of the snow melting machine can be compressed, the requirement of commercial rapid processing is better met, the heat loss is small, the refrigeration efficiency is high, and the purpose of energy saving and consumption reduction can also be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the evaporator described in the application.

[0026] Figure 2 It is a structural sectional view of the evaporator described in the application.

[0027] Figure 3 It is a structural sectional view of the snow melting machine described in the application.

[0028] Figure 4 It is an exploded structural schematic view of the snow melting machine described in the application.

[0029] Correspondence between the figure mark and the name is as follows:

[0030] 1. barrel; 11. outer layer; 12. inner layer; 13. refrigerant flow cavity; 131. pre-cavity; 2. barrel cover; 21. mounting hole; 22. fixed cover; 23. fixed head; 24. gasket; 3. transmission hole; 4. NTC; 5. mounting bracket; 61. inlet pipe; 62. return pipe; 7. transmission shaft; 71. stirring paddle; 72. motor; 73. speed reducer; 8. filler; 9. stirring bin; 91. processing cavity; 92. discharge port; 93. faucet; 94. bin cover. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to explain the related application, but not to limit the application. In addition, it should be noted that only parts related to the application are shown in the drawings for ease of description.

[0032] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0033] As Figures 1-4As shown, the utility model discloses an evaporator and use high -efficient snow -melt machine product. The evaporator includes cylinder 1 and the cylinder cover 2 of closing cylinder 1 front end opening, the cylinder 1 includes outer layer 11 and inner layer 12, the outer layer 11 and inner layer 12 front and rear end closed connection, to form the closed refrigerant flow passage 13 between the outer layer 11 and inner layer 12, and preferentially, usually in the outer layer 11 and inner layer 12 again no other barrier structure is set up between, especially not set up like the spiral inlet pipeline of sticking in the outer layer 11 inner wall in the prior art, thus, the refrigerant flow passage 13 integral extension in the cylinder 1. The evaporator is also equipped with the inlet pipe 61 and the return pipe 62 that are connected with the cylinder 1, the inlet pipe 61 is inserted into the refrigerant flow passage 13, and the return pipe 62 is communicated with the refrigerant flow passage 13. Refrigerant is injected into the refrigerant flow passage 13 by the inlet pipe 61, due to the refrigerant flow passage 13 integral extension, the refrigerant injected by the inlet pipe 61 is quickly dispersed in the condensing flow passage 13, and the refrigerant is not continuously different spiral flow in the spiral inlet pipeline in the prior art, thereby, the cooling speed and cooling effect of the cylinder 1 are greatly improved, when refrigerant is injected into the refrigerant flow passage 13, the outer surface of the outer layer 11 can form a complete cooling surface; Furthermore, due to the structure of the pipeline wall of the spiral inlet pipeline, the refrigerant is more uniform on the outer surface of the outer layer 11, and there is no gap without refrigerant contact, so that the actual cooling area of the evaporator is increased, and the cooling efficiency of the evaporator is further increased. Further, the utility model discloses a kind of use high -efficient snow -melt machine, including shell and refrigerating assembly and power component located in the shell, and processing module is set to the shell, wherein, the processing module includes stirring bin, evaporator and stirring paddle, the evaporator and stirring paddle are set in the stirring bin, the evaporator uses the evaporator of preceding technical solution, the rear end of the evaporator is fixedly connected with the stirring bin, and the refrigerant flow passage is communicated with the refrigerating assembly by the inlet pipe and return pipe of the evaporator.Utilize the evaporator with refrigerant flow passage to carry out cooling processing to food material in stirring bin, since refrigerant flow passage can make refrigerant quickly dispersed in cavity, and then can more quickly, more uniformly cool processing to food material.

[0034] Embodiment one.

[0035] As the first embodiment of the evaporator described in the present application, as Figure 1 、 Figure 2 shown. Specifically, the evaporator includes cylinder 1 and cylinder cover 2, the cylinder 1 is annular cylinder, the cylinder cover 2 closes the front end opening of the cylinder 1, and the mounting space is formed in the evaporator by the cylinder 1 and the cylinder cover 2.

[0036] The cylinder 1 comprises an outer layer 11 and an inner layer 12, both of which are arranged in the shape of a ring and are closed at the front and rear ends, so that the interlayer between the outer layer 11 and the inner layer 12 forms a refrigerant flow cavity 13. The outer layer 11 and the inner layer 12 are both metal parts, preferably made of stainless steel. The surface between the interlayer of the outer layer 11 and the inner layer 12 is smooth, so that the refrigerant flow cavity 13 extends integrally. The evaporator is also provided with an inlet pipe 61 and a return pipe 62 that communicate with the refrigerant flow cavity 13 and the outside. Generally, the refrigerant from the outside is injected into the refrigerant flow cavity 13 through the inlet pipe 61, and then flows out through the return pipe 62 after circulating in the refrigerant flow cavity 13. Preferably, the cylinder 1 is provided with a bending towards the center at the front end, and correspondingly, the outer layer 11 and the inner layer 12 are both bent towards the center at the front end, so that the refrigerant flow cavity 13 forms a front cavity 131 extending towards the center of the cylinder 1 at the front end. Since the outer layer 11 and the inner layer 12 are generally made of sheet metal such as stainless steel, and the refrigerant flow cavity 13 is formed by closed connection, it is convenient to realize the rounded corners and other bends, so that the cylinder further forms a front cavity 131 with a cooling surface at the front end. On the one hand, the front cavity 131 increases the cooling area of the evaporator, thereby improving the refrigeration efficiency of the evaporator; on the other hand, the front end of the cylinder can be bent with a large round corner, which reduces the edges of the outer surface of the evaporator and makes the evaporator easier to manufacture, and also reduces the residue of food on the surface of the evaporator.

[0037] As shown in Figure 2 The inlet pipe 61 is located at the lower side of the evaporator and extends into the condensation flow cavity 13 from the rear end of the cylinder 1. Preferably, the length of the inlet pipe 61 extending into the refrigerant flow cavity 13 is L1, and the length of the refrigerant flow cavity 13 extending in the axial direction is L, L1 / L≥1 / 2. In this way, the inlet pipe 61 extends from the rear end to the front end of the refrigerant flow cavity 13. When the refrigerant from the outside is injected into the refrigerant flow cavity 13 through the inlet pipe 61, the refrigerant can directly and quickly reach the front end of the evaporator to cool and process the food materials located at the front end.

[0038] The front end of the inlet pipe 61 extending into the refrigerant flow cavity 13 has multiple branch outlets, and the outlets of the multiple branch outlets in the refrigerant flow cavity 13 are oriented differently. That is, the multiple branch outlets are dispersed in various directions in the refrigerant flow cavity 13, for example, the front end of the inlet pipe 61 is provided with a 4-way pipe, one interface of which communicates with the inlet pipe 61, and the other three interfaces are arranged vertically to face the front end, left side and right side of the refrigerant flow cavity 13. Of course, it should be noted that, since the refrigerant flow cavity 13 is annular, the outlets on the left side and right side are arranged in the same annular shape and circumferentially to the left and right respectively. Preferably, the outlet diameter of the multiple branch outlets is smaller than the inner diameter of the inlet pipe 61, so that the refrigerant with external pressure can flow out of different branches. In this way, on the one hand, it ensures that the refrigerant can be dispersed more quickly and uniformly into the refrigerant flow cavity 13, so that the evaporator can cool and process the food materials outside the outer layer 11 more quickly, uniformly and efficiently; on the other hand, the refrigerant injected by the inlet pipe 61 is usually in a high-pressure state, if it flows out of a single outlet, it will usually be ejected from a single outlet, which will exert a large reaction force on the inlet pipe 61, affecting the structural stability of the inlet pipe 61. By arranging multiple branch outlets, the outlet pressure of each branch outlet is reduced, and by arranging in opposite directions, the reaction forces of the opposite branch outlets cancel each other out, further reducing the influence of the refrigerant pressure on the inlet pipe 61.

[0039] The return pipe 62 is located on the upper side of the cylinder body 1, and preferably, the return pipe 62 is connected to the rear end of the refrigerant flow cavity 13 and does not extend into the refrigerant flow cavity 13. Of course, in order to ensure the stable and reliable connection of the return pipe 62 with the cylinder body 1, a small amount of the return pipe 62 will extend into the refrigerant flow cavity 13 during actual production, which is also within the protection scope of the present application. In this way, the inlet pipe 61 extends to the front end of the refrigerant flow cavity 13 to inject refrigerant into the front end of the refrigerant flow cavity 13, and the refrigerant is quickly and uniformly dispersed in the refrigerant flow cavity 13 to exchange heat with the food materials outside the cylinder body 1 and gradually return to the rear end, and then finally return to the external refrigeration assembly through the return pipe 62 at the rear end. The return pipe 62 at the rear end enables the refrigerant to be more uniformly dispersed in the refrigerant flow cavity, and also enables the refrigerant after heat exchange to be more thoroughly returned and recovered through the return pipe, avoiding the refrigerant remaining in the refrigerant flow cavity and affecting the refrigeration efficiency.

[0040] The installation cavity 14 is formed between the cylinder body 1 and the cylinder cover 2. When the evaporator is located in a snow melting machine product or other product, the outer layer 11 contacts the food material to cool the food material, and the inner layer 12 is located in the installation cavity and does not directly contact the food material, but due to the effect of the external environment, the inner layer 12 also exchanges heat with the external ambient air, thereby affecting the refrigeration efficiency of the evaporator. Preferably, the installation cavity 14 is provided with a filler 8, wherein the filler 8 is a poor conductor of heat. Thus, when the filler 8 in contact with the inner layer 12 is cooled to a certain temperature, it will no longer exchange heat with the refrigerant in the refrigerant flow cavity 13 through the inner layer 12 or only exchange a small amount of heat, and the filler 8 blocks further heat exchange with the external environment, thereby avoiding heat loss, improving the refrigeration efficiency of the evaporator, and also avoiding energy loss.

[0041] For products using the evaporator, it is also necessary to monitor the real-time state of the processed food material, and thus the evaporator is also provided with an NTC for detecting temperature. Preferably, the cylinder cover 2 is provided with a mounting hole 21, and the NTC is arranged at the mounting hole 21 with the end portion exposed, the rear end of the NTC is located in the installation cavity 14, and the NTC is electrically connected to the external product control module through a lead wire.

[0042] For products using the evaporator, such as snow melting machine products, in order to ensure that the food material located outside the evaporator is cooled more uniformly, a stirring paddle is usually also provided to mix and stir the food material. Thus, the evaporator is also provided with a transmission shaft 7 for driving the stirring paddle. Preferably, the transmission hole 3 of the cylinder cover 2 is provided with a fixed cover 22 and a fixed head 23 fixedly connected to each other, and the fixed cover 22 and the fixed head 23 are located on both sides of the cylinder cover 2 to clamp the cylinder cover 2 in the middle, and the fixed cover 22 and the fixed head 23 are used to limit the transmission shaft 7. A sealing gasket 24 is also arranged between the fixed cover 22 and the cylinder cover 2, which prevents the external food material from flowing into the installation cavity 14 through the transmission hole 3. The rear end of the cylinder body 1 is also provided with an installation bracket 5 fixedly connected to the outside, and the installation bracket 5 is fixedly connected to the corresponding product.

[0043] By forming the refrigerant flow cavity directly extending integrally from the inner layer and the outer layer of the cylinder, the refrigerant injected into the refrigerant flow cavity can be quickly dispersed throughout the refrigerant flow cavity, reducing the flow time of the refrigerant circulating in the spiral inlet pipe in the prior art, and the cooling speed is faster; since the refrigerant can quickly fill the entire refrigerant flow cavity, the entire surface of the outer surface of the cylinder in contact with the food material can be quickly refrigerated, and since the contact area is increased, the refrigeration efficiency is higher, and the non-refrigeration surface formed between the walls of the spiral inlet pipe in the prior art is reduced, the effective refrigeration area is increased, and the refrigeration efficiency of the evaporator is ensured.

[0044] It can be understood that the inner layer and the outer layer can also be provided in different shapes according to different structural characteristics, for example, the inner layer can also be provided in an elliptical shape, etc.; or the inner layer is also provided with a local groove shape for fixing the inlet pipe, etc.

[0045] It can be understood that the outer layer can be provided with different outer surfaces according to the shape of the product to which the evaporator is applied. For example, the axial cross-section of the outer layer can be provided in a conical shape, an elliptical shape, a multi-segment stepped shape, etc.; the outer layer can be provided with a plurality of sizes of rounded corners at the position where the shape of the outer surface of the cylinder changes.

[0046] It can be understood that based on the production requirements of the cylinder, the outer layer and the inner layer are respectively rolled up along the axial direction and welded and sealed at the butt joint, whereby the outer layer and the inner layer are clamped to form a closed refrigerant flow cavity, but in the radial cross-section of the cylinder, the refrigerant flow cavity is in a non-connected annular shape in the circumferential direction.

[0047] It can be understood that the inner layer and the outer layer are directly connected and sealed at the end cover, or the inner layer and the outer layer are integrally formed and connected at the open end to form a refrigerant flow cavity inside; or the inner layer and the outer layer can be connected and sealed at the position close to the end in the middle according to different structural arrangements.

[0048] It can be understood that the inlet pipe can also only extend into the refrigerant flow cavity from the rear end of the cylinder and be located in the rear half of the refrigerant flow cavity.

[0049] It can be understood that the inlet pipe has only a single outlet at the end of the refrigerant flow cavity.

[0050] It can be understood that the inlet pipe and the return pipe are both arranged at the center height of the cylinder and are respectively located on both sides of the center height of the cylinder.

[0051] It can be understood that the inner layer is directly made of a thermal conductor, and the refrigerant flow cavity is clamped between the inner layer and the outer layer, whereby the mounting cavity of the evaporator no longer needs to be provided with thermal insulation filler.

[0052] It can be understood that the NTC is arranged at the rear end of the evaporator; or, the evaporator is not provided with an NTC, for example, an NTC module is arranged directly in the corresponding product.

[0053] Embodiment two.

[0054] As an embodiment of using the snow melting machine with high efficiency described in the present application, as shown in Figure 3 , Figure 4 compared with embodiment one, the present embodiment specifically provides a snow melting machine product using the aforementioned evaporator. It should be noted that the specifically described embodiment one and embodiment two are not completely independent of each other, but are only used to specifically illustrate two preferred technical solutions, and the technical features and technical solutions of the two embodiments are common and can be used as reference for each other.

[0055] Specifically, as shown in Figure 3 , 4 the snow melting machine comprises a machine shell (not shown), a refrigeration assembly (not shown) and a power assembly located in the machine shell, and a processing module arranged on the machine shell. The processing module comprises a stirring bin 9, an evaporator and a stirring paddle 71. The stirring bin 9 forms a processing cavity 91 inside for containing food materials, and the evaporator and the stirring paddle 71 are arranged in the stirring bin 9. Preferably, the upper part of the stirring bin 9 has an opening, and a bin cover 94 is arranged at the opening. Food materials can be poured into the processing cavity 91 through the opening, and the bin cover 94 is installed to block and close the opening. The evaporator adopts the evaporator described in the above technical solution, and the stirring paddle 71 is used to stir and tumble the food materials placed in the stirring bin, so that the food materials can be more uniformly exchanged with the evaporator. The front end bottom of the stirring bin 9 is also provided with a discharge port 92 and a faucet 93. The faucet 93 is operated to open the discharge port 92, and the processed food materials are discharged from the processing cavity 91 through the discharge port 92.

[0056] The power assembly comprises a motor 72 and a speed reducer 73. The motor 72 drives the speed reducer 73 and is power-connected with a transmission shaft 7. The transmission shaft 7 extends into the front end of the stirring bin and is power-connected with the stirring paddle 71. The stirring paddle 71 is sleeved on the outside of the evaporator, and the stirring paddle 71 is provided with a plurality of stirring blades. The motor 72 drives the transmission shaft 7 and the stirring paddle 71 to rotate through the speed reducer 73. The stirring paddle 71 drives the food materials to overturn in the stirring bin and contacts with the evaporator respectively to be cooled and processed.

[0057] The refrigeration surface of the evaporator has larger effective refrigeration area and higher refrigeration efficiency, and the small evaporator and the stirring bin can realize the cooling processing of the food material, and the pulp making efficiency of the evaporator is improved, so that the requirement of realizing the cooling processing of the food material under the premise of the small stirring bin and the evaporator is met, and thus the user can obtain a small, convenient and efficient snow melting machine product.

[0058] It can be understood that the NTC can also be directly arranged at the rear end of the stirring bin.

[0059] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0060] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures, but it does not mean that the actual device is inverted. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned at 90 degrees or in other orientations with other same orientations, and the spatial relative description used herein is interpreted accordingly.

[0061] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special definition unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0062] The above description is only the preferred embodiment of the present application and the explanation of the technical principles. It should be understood by those skilled in the art that the application scope of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features. It should also cover other technical solutions formed by the combinations of the above technical features or equivalent features without departing from the application concept. For example, the technical solutions formed by the above features and the technical features with similar functions disclosed in the present application (but not limited to) are replaced with each other. Here, it is not necessary to enumerate them one by one.

Claims

1. An evaporator characterized by: The evaporator comprises a cylindrical barrel and a barrel cover closing the front end opening of the barrel, the barrel comprises a closed connection of an inner layer and an outer layer, a refrigerant flow cavity extending integrally is formed between the inner layer and the outer layer, the evaporator is further provided with an inlet pipe and a return pipe in communication with the outside, and the refrigerant flows into the refrigerant flow cavity through the inlet pipe and flows out through the return pipe.

2. The evaporator of claim 1, wherein: The inner layer and the outer layer are both provided in the form of a ring-shaped cylinder, the front end and the rear end of the inner layer and the outer layer are closed and connected, and the interlayer of the inner layer and the outer layer forms the refrigerant flow cavity, the inlet pipe extends into the front end of the refrigerant flow cavity from the rear end of the barrel.

3. The evaporator of claim 2 wherein: The length of the inlet pipe extending into the refrigerant flow cavity is not less than 1 / 2 of the depth of the refrigerant flow cavity.

4. The evaporator of claim 1 wherein: The inlet pipe is located on the lower side of the barrel, and / or the return pipe is located on the upper side of the barrel.

5. The evaporator of claim 1 wherein: The inlet pipe is provided with a plurality of branch outlets at the front end of the refrigerant flow cavity, and the outlet directions of the plurality of branch outlets are different.

6. The evaporator of claim 1 wherein: The return pipe is arranged at the rear end of the barrel to communicate with the refrigerant flow cavity.

7. The evaporator of claim 1 wherein: The front end of the barrel is provided with a bending towards the center, and the refrigerant flow cavity forms a front cavity extending in the radial direction at the front end of the barrel.

8. The evaporator of claim 1 wherein: An installation cavity is formed between the inner layer and the barrel cover, and the evaporator is further provided with an NTC located in the installation cavity and arranged on the barrel cover.

9. The evaporator of claim 8 wherein: The installation cavity is further provided with a heat preservation filler.

10. A high-efficiency snow melting machine, comprising a housing and a refrigeration component and a power component located within the housing, and a processing module disposed within the housing, characterized in that: The processing module comprises a stirring bin, an evaporator arranged in the stirring bin and a stirring paddle, the evaporator adopts the evaporator according to any one of claims 1-9, the rear end of the evaporator is fixedly connected with the stirring bin, and the refrigerant flow cavity communicates with the refrigeration assembly through the inlet pipe and the return pipe.

Images