Refrigeration cycle system with phase change

Abstract

The invention relates to a refrigeration cycle system with phase change. The refrigeration cycle system with the phase change comprises a refrigeration cycle and a cold utilization cycle. The refrigeration cycle comprises a cold storage box, an ice slurry generator and an ice slurry pump; the ice slurry generator, the cold storage box and the ice slurry pump are sequentially connected through a pipeline; the cold circulation comprises a refrigerant heat exchange device and a refrigerant pump; the refrigerant heat exchange device, the refrigerant pump and the cold storage box are sequentially connected through a pipeline. The cold storage box comprises a box body, a top cover, a water inlet pipe, a water outlet pipe and a turbulent flow ice crushing mechanism; an opening is formed in the top of the box body, and the top cover is buckled at the opening of the box body, so that the box body and the top cover form a container with a containing cavity; the water inlet pipe and the water outlet pipe are installed and connected to the two sides of the box body respectively. The refrigeration cycle system with the phase change has the advantages of saving energy and reducing cost.

Description

Technical Field

[0001] This application relates to the technical field of energy-saving refrigeration equipment, and particularly to a refrigeration cycle system with phase change. Background Art

[0002] The ice-water mixture refrigeration cycle is a system that utilizes the phase change characteristics of ice and water for refrigeration. It is widely used in fields such as refrigeration, freezing, and air conditioning, and is a relatively efficient refrigeration method.

[0003] 1) Its basic principles include phase change heat absorption and heat transfer mechanisms; phase change heat absorption utilizes the property that ice absorbs a large amount of heat from the surrounding environment during the melting process. The latent heat of fusion of ice is relatively large. For example, at 0°C, the latent heat of fusion of ice is approximately 334 kJ / kg. When ice is mixed with water, the ice gradually melts, and this process continuously absorbs heat, thereby achieving the refrigeration effect. The heat transfer mechanism is that in the ice-water mixture system, the heat of the object to be cooled is transferred to the low-temperature ice-water mixture. Heat is transferred from the object to be cooled to the water in the ice-water mixture through conduction, convection, etc., and then from the water to the melting ice. Due to the presence of ice, the temperature of the mixture can be maintained at a relatively low level (close to 0°C), thereby effectively reducing the temperature of the object to be cooled.

[0004] 2) Its system mainly consists of a refrigeration device, a water circulation system, and a mixing device.

[0005] The refrigeration device includes an ice maker and an ice storage device. The ice maker is a key device for producing ice. Common ice makers include flake ice machines, tube ice machines, and pellet ice machines. The ice produced by a flake ice machine is in the form of thin flakes, which is suitable for refrigeration scenarios that require a large surface area to volume ratio; the ice produced by a tube ice machine is tubular, and its characteristic is that the strength of the ice is relatively high; the ice produced by a pellet ice machine is in the form of small pellets, and this kind of ice has a good mixing effect with water and a high heat transfer efficiency. The ice storage device is used to store the ice produced by the ice maker. The ice storage device needs to have good heat insulation performance to reduce the melting loss of ice during storage. Common ice storage devices include ice storage tanks and ice refrigerators, and their heat insulation materials generally use materials with low thermal conductivity such as polyurethane foam.

[0006] The water circulation system includes a water pump and a water pipeline. The water pump is responsible for transporting water to the places that need refrigeration and making the water circulate in the system. The selection of the water pump needs to consider parameters such as flow rate and head to meet the refrigeration requirements of the system. For example, in a large cold storage ice-water mixture refrigeration system, a centrifugal pump with a relatively large flow rate and a relatively high head may be required. The water pipeline connects various components, including the ice maker, the ice storage device, and the device to be cooled, to ensure the normal circulation of water. The material of the water pipeline is usually selected as a material with good corrosion resistance and heat conduction performance, such as stainless steel pipe or copper pipe.

[0007] A mixing device is used to fully mix ice and water to ensure the temperature uniformity of the mixture. The mixing device has various design forms. Common ones include stir-type mixers, which make ice and water come into full contact and mix through the rotation of the stirring paddle; there are also static mixers, which utilize special pipeline structures to achieve the mixing of ice and water during the flowing process.

[0008] 3) Its refrigeration process

[0009] During the ice-making stage, the refrigerant in the ice maker evaporates and absorbs heat in the evaporator, causing the temperature of the water on the surface of the evaporator to drop below the freezing point, thus forming ice. The specific ice-making processes of different types of ice makers vary, but the basic principle is to utilize the phase change of the refrigerant to achieve the refrigeration and ice formation of water.

[0010] During the ice storage stage, the made ice is collected and stored in the ice storage device. During this process, the ice storage device should try to maintain the state of the ice and reduce the heat transfer causing the melting of the ice.

[0011] During the ice melting and refrigeration stage, when refrigeration is required, the ice in the ice storage device is transported to the mixing device, and at the same time, water is also transported to the mixing device. In the mixing device, ice and water are mixed, and the cooled water or air and other media absorb heat through heat exchange with the ice-water mixture. If it is for air refrigeration, generally there will be a dedicated evaporator coil. The ice-water mixture flows inside the coil, and air flows outside the coil, and heat exchange occurs through the coil wall to lower the air temperature.

[0012] In some ice-water mixing refrigeration cycles, ice making and refrigeration are usually carried out at night, and the cold quantity is taken out and utilized during the day for refrigeration cycles such as air conditioners. Thus, even if the compressor of the air conditioner is not turned on during the day, sufficient cold quantity can be ensured. This way of cold quantity circulation and utilization can greatly reduce the refrigeration cost because the comprehensive electricity cost at night is significantly lower than that during the day; in addition, the temperature at night is lower and refrigeration is easier, so it can also achieve good energy-saving effects.

[0013] In the existing ice-water mixing refrigeration cycle, the treatment of ice mainly relies on adding substances such as salt to prevent ice cubes from aggregating. This method requires high material requirements for the equipment on the one hand, and increases the energy consumption of refrigeration on the other hand. Summary of the Invention

[0014] Based on this, the purpose of this application is to provide a refrigeration cycle system with phase change, which has the advantages of both achieving energy conservation and cost reduction and achieving good ice-water mixing and storage.

[0015] On the one hand, this application provides a refrigeration cycle system with phase change, including a refrigeration cycle and a cold utilization cycle;

[0016] The refrigeration cycle includes a cold storage tank, an ice slurry generator, and an ice slurry pump; the ice slurry generator, the cold storage tank, and the ice slurry pump are sequentially connected through pipelines;

[0017] The cold utilization cycle includes a refrigerant heat exchange device and a refrigerant pump; the refrigerant heat exchange device, the refrigerant pump, and the cold storage tank are sequentially connected through pipelines;

[0018] The cold storage tank includes a box body, a top cover, a water inlet pipe, a water outlet pipe, and a flow disturbance and ice crushing mechanism;

[0019] The top of the box body has an opening, and the top cover is buckled at the opening of the box body, so that the box body and the top cover form a container with an accommodation chamber;

[0020] The water inlet pipe and the water outlet pipe are respectively installed and connected on both sides of the box body; the flow disturbance and ice crushing mechanism is installed on the top cover;

[0021] The flow disturbance and ice crushing mechanism includes an inner shaft, an inner pipe, an outer pipe, a lifting ring, a vibrating hammer, and a flow disturbance spiral;

[0022] The inner pipe is sleeved inside the outer pipe, the lifting ring is installed in the middle of the inner pipe through a connecting piece, and the flow disturbance spiral is installed at the bottom of the inner pipe;

[0023] The vibrating hammer is hinged in the middle of the outer pipe; at least one inclined plane is formed on the upper surface of the lifting ring, and the handle of the vibrating hammer is in movable contact with the inclined plane of the lifting ring. When the inner pipe rotates around the axis, the lifting ring is driven to rotate, so that the vibrating hammer swings periodically around the hinge point;

[0024] The hinge point of the vibrating hammer and the outer pipe is located on the outer wall of the outer pipe;

[0025] The inner diameter of the lifting ring is larger than the outer diameter of the outer pipe;

[0026] The outer pipe passes through the top cover and is fixedly installed on the top cover.

[0027] The refrigeration cycle system with phase change described in this application generates ice slurry (ice - water mixture) through the refrigeration cycle and stores the ice slurry in a cold storage tank. Then, in the cold - using cycle, the cold quantity of the ice slurry in the cold storage tank is used to provide cold quantity to users. For example, it is used in the refrigeration cycle of an air conditioner, thus eliminating the refrigeration link of the air conditioner. In the cold storage tank of this application, a flow - disturbing and ice - crushing mechanism is provided, which can disturb the liquid and crush the ice while disturbing the liquid, so as to obtain ice slurry with fine ice cubes, prevent the formation of large ice cubes, and ensure that there are ice cubes in the tank to ensure the sufficient flow of the ice slurry. Compared with the prior art, the flow - disturbing and ice - crushing mechanism of this application uses the power outside the tank, and multiple flow - disturbing and ice - crushing mechanisms are driven by one driver, thus saving energy.

[0028] In the flow - disturbing and ice - crushing mechanism of this application, the large ice cubes are broken by the repeated lifting and rotation of the vibration hammer. At the same time, the provided flow - disturbing spiral has two functions. One is to disturb the water flow to make the water flow, and the other is to lift the ice cubes in the form of a spiral to make the ice cubes below float. Through the flow - disturbing and ice - crushing mechanism, the existence of ice slurry is fully ensured, and the aggregation of large ice cubes is prevented. Furthermore, the ice cubes in the ice slurry are in a fine state to ensure the sufficient flow of the ice slurry.

[0029] The refrigeration process occurs at night, and the crushing of the ice slurry in the tank mainly occurs at night. Therefore, the electricity cost is low, and due to the low ambient temperature, the energy consumption is also reduced. It comprehensively realizes the function of energy conservation and consumption reduction, and also achieves the effect of cost reduction.

[0030] Compared with the prior art, the refrigeration cycle system with phase change of this application not only ensures that there is always ice slurry with fine ice cubes in the cold storage tank, but also achieves the effect of energy conservation.

[0031] Furthermore, between two adjacent slope surfaces on the top surface of the lifting ring, a flat surface is also formed;

[0032] The highest point of the slope surface of the lifting ring is higher than the hinge point, so that the handle of the vibration hammer can rotate upward;

[0033] The flat surface of the lifting ring is lower than the hinge point, so that the handle of the vibration hammer can rotate downward;

[0034] A vertical surface is formed between the highest point of the slope surface and the adjacent flat surface;

[0035] An arc is formed at the transition between the vertical surface and the slope surface;

[0036] The slope surface is an inclined surface adapted to the movement route of the vibration hammer to form a surface contact with the vibration hammer.

[0037] Further, at least two bearings are sleeved on the outer wall of the inner tube, and the inner tube is slidably connected to the outer tube through the bearings;

[0038] A circular mounting plate is formed at the bottom end of the inner tube, and the flow-disturbing spiral is fixed on the mounting plate;

[0039] Synchronous pulleys are installed at the top of the inner tube, and multiple synchronous pulleys are connected by a synchronous belt;

[0040] Multiple flow-disturbing ice-breaking mechanisms form a set of synchronous transmission mechanisms, and each set of synchronous transmission mechanisms is driven by a synchronous motor; multiple sets of synchronous transmission mechanisms are installed on the top cover.

[0041] Further, the flow-disturbing spiral is a variable-diameter spiral, the diameter of the upper part of the variable-diameter spiral is large, and the diameter of the lower part is small;

[0042] A pointed protrusion is formed at the bottom end of the flow-disturbing spiral;

[0043] The spiral direction of the flow-disturbing spiral is the same as or opposite to the spiral direction of the slope of the lifting ring;

[0044] A flange is installed at the top end of the outer tube, and the outer tube is installed on the top cover through the flange.

[0045] Further, both ends of the vibrating hammer are conical;

[0046] The vibrating hammer is made of plastic, and a strip-shaped solid steel block is embedded in the vibrating hammer;

[0047] The inner tube, the outer tube, the lifting ring, the mounting plate, and the flow-disturbing spiral are respectively made of plastic;

[0048] The inner shaft is made of stainless steel.

[0049] Further, the cold storage box further includes a lifting mechanism, a cover body, a first net, a second net, a liquid level sensor, and a controller;

[0050] The cover body covers the box body;

[0051] The lifting mechanism is respectively connected to the cover body and the top cover, and is used to lift the top cover;

[0052] Two limiting grooves are formed in the top cover, and the two limiting grooves divide the top cover into three regions; a set of synchronous transmission mechanisms are installed in each of the three regions;

[0053] The first net and the second net are respectively placed vertically in the two limiting grooves; the mesh holes of the first net are larger than those of the second net;

[0054] The liquid level sensor is installed on the lower surface of the top cover and is used to monitor the height position of the material in the box body;

[0055] The lifting mechanism and the liquid level sensor are respectively electrically connected to the controller;

[0056] When the height of the material in the box body decreases, the liquid level sensor detects the signal and transmits the signal to the controller. The controller controls the lifting mechanism to start and lower the top cover, so that the height positions of the plurality of flow disturbing and ice crushing mechanisms decrease;

[0057] When the height of the material in the box body increases, the liquid level sensor detects the signal and transmits the signal to the controller. The controller controls the lifting mechanism to start and lift the top cover, so that the height positions of the plurality of flow disturbing and ice crushing mechanisms increase;

[0058] At least one of the liquid level sensors is provided in each area of the top cover.

[0059] Further, the refrigerant heat exchange device includes a direct current pipe, a baffled elbow pipe, a first heat exchange component, and a second heat exchange component;

[0060] The direct current pipe is placed horizontally;

[0061] The first heat exchange component and the second heat exchange component respectively vertically penetrate the direct current pipe; the first heat exchange component and the plurality of second heat exchange components are sequentially arranged along the length direction of the direct current pipe;

[0062] The two ends of the baffled elbow pipe are respectively connected to the first heat exchange component and the second heat exchange component, or are respectively connected to two of the second heat exchange components;

[0063] A convex portion is formed at the lower part of the direct current pipe at the connection with the first heat exchange component, so that the cross-sectional area of the direct current pipe at the first heat exchange component is larger than the cross-sectional area of the direct current pipe at the second heat exchange component;

[0064] The other end of the first heat exchange component is connected to the circulation outlet pipe, and the other end of the second heat exchange component at the end is connected to the circulation inlet pipe.

[0065] Further, the first heat exchange component includes a first water distribution shell, a first heat exchange small pipe, and a puncturer;

[0066] The first heat exchange small pipe vertically penetrates the direct current pipe, and a plurality of the first heat exchange small pipes are arranged in parallel; two of the first water distribution shells are respectively assembled at both ends of the first heat exchange small pipe;

[0067] One of the first water distribution shells is connected to the circulation outlet pipe;

[0068] Another one of the first water distribution shells is connected to the flow deflection elbow;

[0069] A stepped ring is formed in the middle of the first heat exchange small tube, and the stepped ring is placed inside the straight flow tube;

[0070] The puncturer is sleeved on the first heat exchange small tube and placed above the stepped ring;

[0071] The puncturer includes a pointed protrusion part, a ring part, and a tail part; the pointed protrusion part and the tail part are respectively installed on both sides of the ring part, and the large end of the pointed protrusion part is connected to the ring part; the tail part is in a flat plate shape and the length of the tail part is greater than the length of the pointed protrusion part;

[0072] The ring part is sleeved on the first heat exchange small tube.

[0073] Furthermore, the second heat exchange assembly includes a second water distribution shell and second heat exchange small tubes;

[0074] The second heat exchange small tubes vertically penetrate through the straight flow tube, and a plurality of the second heat exchange small tubes are arranged in parallel; two of the second water distribution shells are respectively assembled at both ends of the second heat exchange small tubes;

[0075] One of the second water distribution shells is connected to the flow deflection elbow;

[0076] Another one of the second water distribution shells is connected to another flow deflection elbow, or is connected to the circulation inlet pipe;

[0077] The inner diameter of the second heat exchange small tube is larger than the inner diameter of the first heat exchange small tube.

[0078] Furthermore, the straight flow tube includes a circular tube part and a square tube part;

[0079] The square tube part is used for connecting and assembling the first heat exchange assembly and the second heat exchange assembly;

[0080] The circular tube parts are respectively connected to both ends of the square tube part and are respectively used for connecting to a refrigerant pump and a cold storage tank.

[0081] For better understanding and implementation, the present application will be described in detail below with reference to the drawings. Description of the Drawings

[0082] Figure 1 It is a flowchart of an exemplary refrigeration cycle system with phase change of the present application;

[0083] Figure 2 It is a three-dimensional structural schematic diagram of an exemplary cold storage tank of the present application;

[0084] Figure 3 It is an internal structure display diagram of an exemplary cold storage tank after being sectioned;

[0085] Figure 4 Schematic perspective view of the assembly relationship of the box body and part of the external structure of the cold storage box exemplary of the present application;

[0086] Figure 5 Schematic perspective view of a set of synchronous transmission mechanisms exemplary of the present application;

[0087] Figure 6 Schematic perspective view of another assembly relationship of the box body and part of the external structure of the cold storage box exemplary of the present application;

[0088] Figure 7 Schematic perspective view of the assembly relationship of the first net, the second net, and the bottom surface of the box body exemplary of the present application;

[0089] Figure 8 Front view of the refrigerant heat exchange device exemplary of the present application;

[0090] Figure 9 Schematic perspective view of the refrigerant heat exchange device exemplary of the present application;

[0091] Figure 10 Schematic perspective view of the cut-open refrigerant heat exchange device exemplary of the present application;

[0092] Figure 11 Schematic perspective view of the first heat exchange small tube exemplary of the present application;

[0093] Figure 12 is Figure 11 an enlarged view of the local structure A in

[0094] Figure 13 Schematic perspective view of the flow disturbing and ice crushing mechanism exemplary of the present application;

[0095] Figure 14 Front view of the flow disturbing and ice crushing mechanism exemplary of the present application;

[0096] Figure 15 Another schematic perspective view of the flow disturbing and ice crushing mechanism exemplary of the present application;

[0097] Figure 16 Schematic diagram of the movement track of the vibrating hammer moving along the lifting ring exemplary of the present application. Detailed implementation manners

[0098] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0099] Please refer to Figures 1 - 16 , an exemplary refrigeration cycle system with phase change in the present application includes a refrigeration cycle and a cold-using cycle;

[0100] The refrigeration cycle includes a cold storage tank, an ice slurry generator, and an ice slurry pump; the ice slurry generator, the cold storage tank, and the ice slurry pump are sequentially connected through pipelines;

[0101] The cold-using cycle includes a refrigerant heat exchange device and a refrigerant pump; the refrigerant heat exchange device, the refrigerant pump, and the cold storage tank are sequentially connected through pipelines;

[0102] The cold storage tank includes a box body 10, a top cover 11, a water inlet pipe 12, a water outlet pipe 13, and a flow disturbing and ice crushing mechanism 30;

[0103] The top of the box body 10 has an opening, and the top cover 11 is buckled at the opening of the box body 10, so that the box body 10 and the top cover 11 form a container with a containing chamber;

[0104] The water inlet pipe 12 and the water outlet pipe 13 are respectively installed and connected on both sides of the box body 10; the flow disturbing and ice crushing mechanism 30 is installed on the top cover 11;

[0105] The flow disturbing and ice crushing mechanism 30 includes an inner shaft 31, an inner pipe 32, an outer pipe 33, a lifting ring 34, a vibrating hammer 35, and a flow disturbing spiral 37;

[0106] The inner pipe 32 is sleeved inside the outer pipe 33, the lifting ring 34 is installed in the middle of the inner pipe 32 through a connecting member, and the flow disturbing spiral 37 is installed at the bottom of the inner pipe 32;

[0107] The vibrating hammer 35 is hinged in the middle of the outer pipe 33; at least one inclined plane is formed on the upper surface of the lifting ring 34, and the handle of the vibrating hammer 35 is in movable contact with the inclined plane of the lifting ring 34. When the inner pipe 32 rotates around its axis, it drives the lifting ring 34 to rotate, so that the vibrating hammer 35 swings periodically around the hinge point;

[0108] The hinge point of the vibrating hammer 35 and the outer tube 33 is located on the outer wall of the outer tube 33;

[0109] The inner diameter of the lifting ring 34 is greater than the outer diameter of the outer tube 33;

[0110] The outer tube 33 passes through and is fixedly installed on the top cover 11.

[0111] The refrigeration cycle system with phase change in the present application generates ice slurry (ice - water mixture) through the refrigeration cycle and stores the ice slurry in the cold storage tank. Then, in the cold - using cycle, the cold of the ice slurry in the cold storage tank is used to provide cold to the user, for example, used in the refrigeration cycle of an air conditioner, thus eliminating the refrigeration link of the air conditioner. In the cold storage tank of the present application, a flow - disturbing and ice - crushing mechanism 30 is provided, which can disturb the liquid and crush the ice while disturbing the liquid, so as to obtain ice slurry with fine ice cubes, prevent the formation of large ice cubes, and ensure that there are ice cubes in the box body 10 to ensure the sufficient flow of the ice slurry. Compared with the prior art, the flow - disturbing and ice - crushing mechanism 30 of the present application uses the power outside the box body 10, and multiple flow - disturbing and ice - crushing mechanisms 30 are driven by one driver, thus saving energy.

[0112] In the flow - disturbing and ice - crushing mechanism 30 of the present application, the large ice cubes are broken by the repeated lifting and rotation of the vibrating hammer 35. At the same time, the provided flow - disturbing spiral 37 has two functions. One is to disturb the water flow to make the water flow; the other is to lift the ice cubes in the form of a spiral to make the ice cubes below float. Through the flow - disturbing and ice - crushing mechanism 30, the existence of ice slurry is fully ensured, and the aggregation of large ice cubes is prevented, so as to ensure that the ice cubes in the ice slurry are in a fine state to ensure the sufficient flow of the ice slurry.

[0113] The refrigeration link occurs at night, and the crushing of the ice slurry in the box body 10 mainly occurs at night. Therefore, the electricity cost is low, and due to the low environmental temperature, the energy consumption is also reduced, comprehensively achieving the effect of energy conservation and consumption reduction, and also achieving the effect of cost reduction.

[0114] Compared with the prior art, the refrigeration cycle system with phase change in the present application not only ensures that there is always ice slurry with fine ice cubes in the cold storage tank, but also achieves the effect of energy conservation.

[0115] In some preferred embodiments, a flat surface is further formed between two adjacent ramp surfaces on the top surface of the lifting ring 34;

[0116] The highest point of the ramp surface of the lifting ring 34 is higher than the hinge point, so that the handle of the vibrating hammer 35 can rotate upward;

[0117] The plane of the lifting ring 34 is lower than the hinge point so that the handle of the vibrating hammer 35 can rotate downward;

[0118] A vertical surface is formed between the highest point of the slope surface and the adjacent plane;

[0119] An arc is formed at the transition between the vertical surface and the slope surface;

[0120] The slope surface is an inclined surface adapted to the path of the vibrating hammer 35 to form a surface contact with the vibrating hammer 35.

[0121] The main function of the lifting ring 34 is to lift the vibrating hammer 35. Therefore, a slope surface is formed on the lifting ring 34, and the lifting ring 34 also provides a descending space for the vibrating hammer 35 in its self-weight state. Therefore, a plane is also formed. The vertical surface is for the vibrating hammer 35 to descend more quickly, so that more gravitational potential energy of the vibrating hammer 35 impacts on the ice when it descends, and the ice is broken more quickly.

[0122] In the embodiment shown in the drawings, two slope surfaces and two planes are formed; in some embodiments, three slope surfaces and three planes can also be provided.

[0123] In some preferred embodiments, at least two bearings are sleeved on the outer wall of the inner tube 32, and the inner tube 32 is slidably connected to the outer tube 33 through the bearings; the inner tube 32 and the outer tube 33 are slidably connected through the bearings before, which facilitates the relative rotation of the inner tube 32 and the outer tube 33 and ensures the coaxiality of the inner tube 32 and the outer tube 33;

[0124] A circular mounting plate 36 is formed at the bottom end of the inner tube 32, and the flow disturbing spiral 37 is fixed on the mounting plate 36; the setting of the mounting plate 36 provides a supporting and fixing surface for the flow disturbing spiral 37 on the one hand, and also provides a blocking surface at the end of the inner tube 32 to seal the bottom end of the inner tube 32, thereby preventing cold or liquid from entering from the bottom end of the inner tube 32;

[0125] Synchronization wheels 42 are installed at the top of the inner tube 32, and a plurality of the synchronization wheels 42 are connected by a timing belt 41; the synchronous motor 40 drives the rotation of the timing belt 41, thereby realizing the synchronous rotation of a plurality of synchronization wheels 42, and further realizing the synchronous rotation of a plurality of inner tubes 32; furthermore, one synchronous motor 40 drives a plurality of inner tubes 32 to rotate, achieving the effect of energy saving;

[0126] A group of synchronous drive mechanisms is composed of multiple spoiler ice-crushing mechanisms 30, and each group of the synchronous drive mechanisms is driven by a synchronous motor 40; multiple groups of the synchronous drive mechanisms are installed on the top cover 11. The synchronous motor 40 is installed above the top cover 11, thus preventing the synchronous motor 40 from entering the box body 10, and further effectively reducing the influence of the cold air in the box body 10 on the synchronous motor 40.

[0127] In the embodiment shown in the drawings, six spoiler ice-crushing mechanisms 30 form a group, and each area of the top cover 11 is provided with a group of spoiler ice-crushing mechanisms 30. Each group of spoiler ice-crushing mechanisms 30 is driven by a motor and realizes synchronous rotation through a synchronous belt 41.

[0128] In some preferred embodiments, a heat preservation ring (not shown) is installed at the bottom end of the outer tube 33. The heat preservation ring is located between the outer tube 33 and the inner tube 32, is fixed to the inner wall of the bottom end of the outer tube 33, and forms a narrow gap with the inner tube 32. The main purpose of setting the heat preservation ring is to prevent the cold quantity from rising through the space between the inner tube 32 and the outer tube 33.

[0129] In some preferred embodiments, the outer walls of the box body 10 and the top cover 11 are respectively wrapped with heat preservation layers to improve the heat preservation and cold preservation effects of the box body 10 and the top cover 11.

[0130] In some preferred embodiments, the spoiler spiral 37 is a variable-diameter spiral, the upper part of the variable-diameter spiral has a large diameter, and the lower part has a small diameter;

[0131] A pointed protrusion is formed at the bottom end of the spoiler spiral 37;

[0132] The spiral direction of the spoiler spiral 37 is the same as or opposite to the spiral direction of the slope of the lifting ring 34;

[0133] A flange 38 is installed at the top end of the outer tube 33, and the outer tube 33 is installed on the top cover 11 through the flange 38.

[0134] As a core structure of the present application: the spoiler spiral 37 plays a very important role in the present application. First of all, the spoiler spiral 37 is a variable-diameter spiral, and its pitch can be variable or equal; the variable-diameter spiral has an approximately conical shape. In the present application, on the one hand, it can disturb the water to make the water flow more fully, and on the other hand, it can make the water rise, thereby driving the ice cubes to rise. When the ice cubes rise, they can be more easily impacted by the vibrating hammer 35, and it is easier to break the ice cubes.

[0135] The diameter of the spiral wire of the spoiler spiral 37 remains unchanged, that is to say, from one end to the other end of the entire spoiler spiral 37 (except at the pointed protrusion at the end), the same diameter is maintained.

[0136] The spoiler screw 37 is preferably made of plastic, or stainless steel can also be used.

[0137] In this application, the vibrating hammer 35 and the spoiler screw 37 are a set of structures used together and must be used in association.

[0138] In some preferred embodiments, both ends of the vibrating hammer 35 are conical;

[0139] The vibrating hammer 35 is made of plastic, and a strip-shaped solid steel block is embedded in the vibrating hammer 35;

[0140] The inner tube 32, the outer tube 33, the lifting ring 34, the mounting plate 36, and the spoiler screw 37 are respectively made of plastic;

[0141] The inner shaft 31 is made of stainless steel.

[0142] In this application, there are two structural forms of the vibrating hammer 35. One is a solid structure made of pure plastic, and the other is a structure with a steel block wrapped in plastic; in the latter scheme, the structure with the steel block wrapped is heavier, thus providing greater gravitational potential energy.

[0143] The end of the vibrating hammer 35 is conical, so as to more conveniently break the ice cubes.

[0144] In some preferred embodiments, the cold storage box further includes a lifting mechanism, a cover 14, a first net 21, a second net 22, a liquid level sensor (not shown), and a controller (not shown);

[0145] The cover 14 covers the box body 10;

[0146] The lifting mechanism is respectively connected to the cover 14 and the top cover 11, and is used to lift the top cover 11;

[0147] Two limiting grooves are formed on the top cover 11, and the two limiting grooves divide the top cover 11 into three regions; a set of the synchronous transmission mechanisms are respectively installed in the three regions;

[0148] The first net 21 and the second net 22 are respectively placed vertically in the two limiting grooves; the mesh of the first net 21 is larger than the mesh of the second net 22;

[0149] The liquid level sensor is installed on the lower surface of the top cover 11 and is used to monitor the height position of the material in the box body 10;

[0150] The lifting mechanism and the liquid level sensor are respectively electrically connected to the controller;

[0151] When the height of the material in the box body 10 drops, the liquid level sensor detects the signal and transmits the signal to the controller, and the controller controls the lifting mechanism to start and lower the top cover 11, so that the height positions of the plurality of flow disturbing ice crushing mechanisms 30 drop;

[0152] When the height of the material in the box body 10 rises, the liquid level sensor detects the signal and transmits the signal to the controller, and the controller controls the lifting mechanism to start and lift the top cover 11, so that the height positions of the plurality of flow disturbing ice crushing mechanisms 30 rise;

[0153] At least one of the liquid level sensors is provided in each area of the top cover 11.

[0154] The function of the lifting mechanism is to adjust the height position of the top cover 11. On the one hand, the cover body 14 provides the effect of heat preservation and cold preservation, preventing the loss of cold from above the top cover 11. On the other hand, it provides a supporting point for the acting force of the lifting mechanism.

[0155] The first net 21 and the second net 22 are respectively formed with mesh holes. The shape of the mesh holes can be circular or rectangular. In the example shown in the drawings, the mesh holes are rectangular, and the mesh holes of the first net 21 are larger than those of the second net 22. Thus, the first net 21 can pass larger ice cubes, and the second net 22 can only pass smaller ice cubes. The water flow direction is from the water inlet pipe 12 into, then passes through the first net 21 in sequence, then passes through the second net 22, and finally flows out from the water outlet pipe 13. After flowing through the first net 21 and the second net 22, it is ensured that the ice cubes in the slurry flowing out from the water outlet pipe 13 are sufficiently crushed.

[0156] In some preferred embodiments, counterweights are respectively arranged at the bottoms of the first net 21 and the second net 22, and the counterweights are arranged to ensure that the first net 21 and the second net 22 are vertically placed under their own weights.

[0157] In some preferred embodiments, the lifting mechanism includes a lifting motor 15, a winding roller, a fixed pulley 16, a hook 17, and a cable 18. The lifting motor 15 is installed on the side wall of the box body 10, two fixed pulleys 16 are installed on both sides of the top of the cover body 14, two hooks 17 are respectively hoisted on both sides of the top cover 11, one ends of two cables 18 are respectively wound on the winding roller, and the other ends thereof respectively pass through the fixed pulley 16 and are connected to the hooks 17 at corresponding positions; the lifting motor 15 drives the winding roller to rotate, thereby simultaneously driving the two cables 18 to move, and further simultaneously driving the lifting of both sides of the top plate. The lengths of the two cables 18 are different, and the two cables 18 are firmly connected to the hooks 17 and the winding roller.

[0158] In some preferred embodiments, the refrigerant heat exchange device includes a direct current pipe 53, a flow deflecting elbow 58, a first heat exchange component, and a second heat exchange component;

[0159] The DC pipe 53 is placed horizontally.

[0160] The first heat exchange component and the second heat exchange component vertically penetrate through the DC pipe 53 respectively; the first heat exchange component and the multiple second heat exchange components are arranged in sequence along the length direction of the DC pipe 53.

[0161] Both ends of the baffled elbow 58 are respectively connected to the first heat exchange component and the second heat exchange component, or are respectively connected to two of the second heat exchange components.

[0162] At the lower part of the DC pipe 53 where it is connected to the first heat exchange component, a convex part 59 is formed, so that the cross-sectional area of the DC pipe 53 at the first heat exchange component is larger than the cross-sectional area of the DC pipe 53 at the second heat exchange component.

[0163] The other end of the first heat exchange component is connected to the circulation outlet pipe 51, and the other end of the second heat exchange component at the end is connected to the circulation inlet pipe 52.

[0164] In order to adapt to the technical solution of the present application and to effectively combine with the use of ice slurry, as an important structure in the present application, the refrigerant heat exchange device plays a very important role. Therefore, the present application also provides a unique refrigerant heat exchange device for this purpose, which has a large structural difference from the conventional heat exchange device.

[0165] The ice slurry enters from one end of the DC pipe 53, this end is on one side of the first heat exchange component, and then flows out from the other end, this end is on one side of the second heat exchange component. Therefore, the ice slurry first exchanges and transfers heat with the first heat exchange component, and then exchanges and transfers heat with the second heat exchange component.

[0166] At the first heat exchange component, a convex part 59 is formed on the DC pipe 53, and the cross-sectional area of this part is larger than that of other parts, so that when the slurry in the DC pipe 53 passes through the first heat exchange component, a larger flow area is formed, and the heat exchange is more sufficient.

[0167] In some preferred embodiments, the first heat exchange component includes a first water distribution shell 54, a first heat exchange small pipe 55, and a puncturing device.

[0168] The first heat exchange small pipe 55 vertically penetrates through the DC pipe 53, and multiple first heat exchange small pipes 55 are arranged in parallel; two first water distribution shells 54 are respectively assembled at both ends of the first heat exchange small pipe 55.

[0169] One of the first water distribution shells 54 is connected to the circulation outlet pipe 51.

[0170] The other first water distribution shell 54 is connected to the baffled elbow 58.

[0171] A step ring 64 is formed in the middle of the first heat exchange small tube 55, and the step ring 64 is placed inside the direct current tube 53;

[0172] The puncturer is sleeved on the first heat exchange small tube 55 and placed above the step ring 64;

[0173] The puncturer includes a pointed protrusion 61, a ring part 62, and a tail part 63; the pointed protrusion 61 and the tail part 63 are respectively installed on both sides of the ring part 62, and the large end of the pointed protrusion 61 is connected to the ring part 62; the tail part 63 is in a flat plate shape and the length of the tail part 63 is greater than the length of the pointed protrusion 61;

[0174] The ring part 62 is sleeved on the first heat exchange small tube 55.

[0175] One first water distribution shell 54 is installed at the end of the circulation outlet pipe 51, and the other first water distribution shell 54 is installed at the end of a baffle elbow 58. A plurality of first heat exchange small tubes 55 are installed between the two first water distribution shells 54, and the plurality of first heat exchange small tubes 55 respectively penetrate through the direct current tube 53.

[0176] The puncturer plays a very important role in this application and is used to puncture ice cubes. The pointed protrusion 61 of the puncturer faces the ice slurry, opposite to the flow direction of the ice slurry, so as to puncture the ice cubes in the ice slurry. The tail part 63 of the puncturer is used to adjust the direction of the puncturer, and the water flow (ice slurry) flows through both sides of the tail part 63, so as to ensure that the pointed protrusion 61 of the puncturer faces the direction where the water flow comes from.

[0177] The length of the tail part 63 is greater than the length of the pointed protrusion 61, so as to ensure the stable orientation of the pointed protrusion 61.

[0178] In some preferred embodiments, the pointed protrusion 61 has three convex cones, and the three convex cones are arranged in parallel.

[0179] In some preferred embodiments, the second heat exchange assembly includes a second water distribution shell 56 and a second heat exchange small tube 57;

[0180] The second heat exchange small tube 57 vertically penetrates through the direct current tube 53, and a plurality of the second heat exchange small tubes 57 are arranged in parallel; two of the second water distribution shells 56 are respectively assembled at both ends of the second heat exchange small tube 57;

[0181] One of the second water distribution shells 56 is connected to the baffle elbow 58;

[0182] The other second water distribution shell 56 is connected to another baffle elbow 58, or connected to the circulation inlet pipe 52;

[0183] The inner diameter of the second heat exchange small tube 57 is greater than the inner diameter of the first heat exchange small tube 55.

[0184] One of the second water distribution shells 56 is used to connect with the circulation inlet pipe 52, and the remaining second water distribution shells 56 are used to connect with the baffle elbow 58.

[0185] The water flow direction is to enter from the circulation inlet pipe 52, then flow through the second heat exchange assembly and the baffle elbow 58, then enter the first heat exchange assembly, and finally flow out from the circulation outlet pipe 51.

[0186] The function of the water distribution shell is to evenly distribute the water, so as to distribute the water in the circulation inlet pipe 52, the circulation outlet pipe 51, and the baffle elbow 58, and make it evenly distributed into the first heat exchange small tubes 55 and the second heat exchange small tubes 57. At the same time, the water flowing out of the first heat exchange small tubes 55 and the second heat exchange small tubes 57 enters the water distribution shell again for collection.

[0187] Specifically, in the example shown in the attached drawing, the water flow passes through the circulation inlet pipe 52, the second heat exchange assembly, the baffle elbow, the second heat exchange assembly, the baffle elbow, the second heat exchange assembly, the baffle elbow, the second heat exchange assembly, the baffle elbow, the first heat exchange assembly, and the circulation outlet pipe 51 in sequence.

[0188] In the example shown in the attached drawing, the ice slurry flows through the end of the direct current pipe 53, the first heat exchange small tubes 55, a plurality of second heat exchange small tubes 57, and the other end of the direct current pipe 53 in sequence.

[0189] The inner diameter of the second heat exchange small tube 57 is larger than that of the first heat exchange small tube 55. For the first water distribution shell 54 and the second water distribution shell 56 of the same size, the number of second heat exchange small tubes 57 that can be installed is less than the number of first heat exchange small tubes 55, so the heat exchange area of the second heat exchange assembly is small; while the heat exchange area of the first heat exchange assembly is large.

[0190] The diameter of the first heat exchange small tube 55 is smaller than that of the second heat exchange small tube 57, and the distance between the first heat exchange small tubes 55 is smaller than the distance between the second heat exchange small tubes 57. Therefore, the arrangement of the first heat exchange small tubes 55 is denser. Furthermore, the size of the ice cubes that can pass through the first heat exchange assembly is smaller, which blocks more ice cubes. At the same time, ice cube breaking and shattering also occur at the first heat exchange assembly. If the ice cubes are too large to pass through the gap between the first heat exchange small tubes 55, they will be blocked, and the water flow passes through the convex part 59 of the direct current pipe 53; it will not affect the water flow. And while the ice cubes are blocked, the ice cubes also come into contact with the first heat exchange small tubes 55, thereby transferring the cold quantity to the first heat exchange small tubes 55.

[0191] When the ice slurry flows in the direct current pipe 53, the cold quantities of the ice cubes and the water are respectively transferred to the first heat exchange assembly and the second heat exchange assembly, so that the ice cubes melt. In this process, a phase change process occurs, and the melting of the ice cubes releases a large amount of cold quantity, thereby providing a large amount of cold quantity for user refrigeration.

[0192] In some preferred embodiments, the DC tube 53 includes a round tube portion and a square tube portion;

[0193] The square tube portion is used to connect and assemble the first heat exchange component and the second heat exchange component;

[0194] The round tube portions are respectively connected to both ends of the square tube portion and are respectively used to connect to the refrigerant pump and the cold storage tank.

[0195] The working principle of the refrigeration cycle system with phase change of the present application:

[0196] During the day, users use cold, so the cold-using cycle works. The ice slurry comes out of the cold storage tank, passes through the refrigerant heat exchange device and the refrigerant pump in sequence, and then flows back into the cold storage tank. The cold is taken away at the refrigerant heat exchange device, and the ice slurry undergoes a phase change at the refrigerant heat exchange device. The water flowing back into the cold storage tank is at a higher temperature than the ice slurry in the box body 10, causing the temperature of the ice slurry to rise.

[0197] At night, the water in the cold storage tank is refrigerated, so the refrigeration cycle works. The water in the cold storage tank passes through the ice slurry pump and the ice slurry generator in sequence, and then flows back into the cold storage tank. At this time, the water in the cold storage tank gradually condenses and forms an ice slurry state.

[0198] When large ice blocks are formed due to the aggregation of ice blocks in the cold storage tank, they will be knocked into small pieces by the turbulence ice-breaking mechanism 30. On the one hand, it keeps the cold storage tank full of ice-water mixture, and on the other hand, it ensures the fluidity of the ice blocks, thus bringing enough cold in the cold-using cycle.

[0199] In the present application, the cold-using cycle and the refrigeration cycle share a cold storage tank and a set of water inlet pipe 12 and water outlet pipe 13. The water inlet pipe 12 is divided into two branches, one branch is for the refrigeration cycle and the other branch is for the cold-using cycle; the water outlet pipe 13 is divided into two branches, one branch is for the refrigeration cycle and the other branch is for the cold-using cycle. Valves are provided on each branch, and this valve is preferably an automatic control valve.

[0200] The refrigeration cycle system with phase change of the present application ensures night refrigeration and generates enough ice slurry for daytime use. During the refrigeration process, on the one hand, the night refrigeration energy consumption is low, and on the other hand, the night refrigeration cost is low. Therefore, the overall energy consumption and cost of refrigeration are reduced, especially suitable for large factories.

[0201] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A refrigeration cycle system with phase change, characterized in that: It includes a refrigeration cycle and a cold - using cycle; The refrigeration cycle includes a cold storage tank, an ice slurry generator, and an ice slurry pump; the ice slurry generator, the cold storage tank, and the ice slurry pump are sequentially connected through pipelines; The cold - using cycle includes a refrigerant heat - exchange device and a refrigerant pump; the refrigerant heat - exchange device, the refrigerant pump, and the cold storage tank are sequentially connected through pipelines; The cold storage tank includes a box body, a top cover, a water inlet pipe, a water outlet pipe, and a flow - disturbing ice - crushing mechanism; The top of the box body has an opening, and the top cover is buckled at the opening of the box body, so that the box body and the top cover form a container with a containing chamber; The water inlet pipe and the water outlet pipe are respectively installed and connected on both sides of the box body; the flow - disturbing ice - crushing mechanism is installed on the top cover; The flow - disturbing ice - crushing mechanism includes an inner shaft, an inner pipe, an outer pipe, a lifting ring, a vibrating hammer, and a flow - disturbing spiral; The inner pipe is sleeved inside the outer pipe, the lifting ring is installed in the middle of the inner pipe through a connecting piece, and the flow - disturbing spiral is installed at the bottom of the inner pipe; The vibrating hammer is hinged in the middle of the outer pipe; at least one inclined plane is formed on the upper surface of the lifting ring, and the handle of the vibrating hammer is in movable contact with the inclined plane of the lifting ring. When the inner pipe rotates around its axis, it drives the lifting ring to rotate, so that the vibrating hammer periodically swings around the hinge point; The hinge point of the vibrating hammer and the outer pipe is located on the outer wall of the outer pipe; The inner diameter of the lifting ring is larger than the outer diameter of the outer pipe; The outer pipe passes through the top cover and is fixedly installed on the top cover; 2. The refrigeration cycle system with phase change according to claim 1, characterized in that: A flat surface is also formed between two adjacent inclined planes on the top surface of the lifting ring; The highest point of the inclined plane of the lifting ring is higher than the hinge point, so that the handle of the vibrating hammer can rotate upward; The flat surface of the lifting ring is lower than the hinge point, so that the handle of the vibrating hammer can rotate downward; A vertical surface is formed between the highest point of the inclined plane and its adjacent flat surface; An arc is formed at the transition between the vertical surface and the inclined plane; The inclined plane is an inclined plane adapted to the moving route of the vibrating hammer to form a surface contact with the vibrating hammer; 3. The refrigeration cycle system with phase change according to claim 2, wherein: At least two bearings are sleeved on the outer wall of the inner pipe, and the inner pipe and the outer pipe are slidably connected through the bearings; A circular mounting plate is formed at the bottom end of the inner pipe, and the flow - disturbing spiral is fixed on this mounting plate; A synchronous pulley is installed at the top of the inner pipe, and multiple synchronous pulleys are connected through a synchronous belt; Multiple flow - disturbing ice - crushing mechanisms form a group of synchronous transmission mechanisms, and each group of synchronous transmission mechanisms is driven by a synchronous motor; multiple groups of synchronous transmission mechanisms are installed on the top cover; 4. The refrigeration cycle system with phase change according to claim 3, characterized in that: The flow - disturbing spiral is a variable - diameter spiral, the diameter of its upper part is large, and the diameter of its lower part is small; A pointed protrusion is formed at the bottom end of the flow - disturbing spiral; The helix direction of the flow - disturbing spiral is the same as or opposite to the helix direction of the inclined plane of the lifting ring; A flange is installed at the top end of the outer pipe, and the outer pipe is installed on the top cover through this flange; 5. The refrigeration cycle system with phase change according to claim 4, characterized in that: Both ends of the vibrating hammer are conical; The vibrating hammer is made of plastic, and a strip - shaped solid steel block is embedded in the vibrating hammer; The inner tube, the outer tube, the lifting ring, the mounting plate, and the flow-disturbing spiral are respectively made of plastic material; The inner shaft is made of stainless steel.

6. The refrigeration cycle system with phase change according to claim 4, characterized in that: The cold storage box further includes a lifting mechanism, a cover body, a first net, a second net, a liquid level sensor, and a controller; The cover body covers the box body; The lifting mechanism is respectively connected to the cover body and the top cover, and is used to lift the top cover; Two limiting grooves are formed on the top cover, and the two limiting grooves divide the top cover into three regions; A set of the synchronous transmission mechanisms are respectively installed in the three regions; The first net and the second net are respectively placed vertically in the two limiting grooves; The mesh holes of the first net are larger than those of the second net; The liquid level sensor is installed on the lower surface of the top cover for monitoring the height position of the material in the box body; The lifting mechanism and the liquid level sensor are respectively electrically connected to the controller; When the height of the material in the box body decreases, the liquid level sensor detects the signal and transmits the signal to the controller, and the controller controls the lifting mechanism to start and lower the top cover, so that the height positions of the multiple flow-disturbing ice-breaking mechanisms decrease; When the height of the material in the box body increases, the liquid level sensor detects the signal and transmits the signal to the controller, and the controller controls the lifting mechanism to start and lift the top cover, so that the height positions of the multiple flow-disturbing ice-breaking mechanisms increase; At least one of the liquid level sensors is provided in each region of the top cover.

7. The refrigeration cycle system with phase change according to claim 6, characterized in that: The refrigerant heat exchange device includes a straight tube, a flow-deflecting elbow, a first heat exchange component, and a second heat exchange component; The straight tube is placed horizontally; The first heat exchange component and the second heat exchange components respectively penetrate the straight tube vertically; The first heat exchange component and the multiple second heat exchange components are arranged in sequence along the length direction of the straight tube; The two ends of the flow-deflecting elbow are respectively connected to the first heat exchange component and the second heat exchange component, or are respectively connected to two of the second heat exchange components; A convex part is formed at the lower part of the straight tube at the connection with the first heat exchange component, so that the cross-sectional area of the straight tube at the first heat exchange component is larger than the cross-sectional area of the straight tube at the second heat exchange component; The other end of the first heat exchange component is connected to the circulation outlet pipe, and the other end of the second heat exchange component at the end is connected to the circulation inlet pipe.

8. The refrigeration cycle system with phase change according to claim 7, characterized in that: The first heat exchange component includes a first water distribution shell, a first heat exchange small tube, and a puncturing device; The first heat exchange small tube penetrates the straight tube vertically, and a plurality of the first heat exchange small tubes are arranged in parallel; The two first water distribution shells are respectively assembled at both ends of the first heat exchange small tube; One of the first water distribution shells is connected to the circulation outlet pipe; The other first water distribution shell is connected to the flow-deflecting elbow; A step ring is formed in the middle of the first heat exchange small tube, and the step ring is placed inside the straight tube; The puncturing device is sleeved on the first heat exchange small tube and placed above the step ring; The puncturing device includes a pointed protrusion, a ring part, and a tail part; The pointed protrusion and the tail part are respectively installed on both sides of the ring part, and the large end of the pointed protrusion is connected to the ring part; The tail part is in a flat shape and the length of the tail part is greater than the length of the pointed protrusion; The ring part is sleeved on the first heat exchange small tube.

9. The refrigeration cycle system with a phase change according to claim 8, characterized in that: The second heat exchange component includes a second water distribution shell and second heat exchange small tubes; The second heat exchange small tubes vertically penetrate through the direct current tube, and a plurality of the second heat exchange small tubes are arranged in parallel; two of the second water distribution shells are respectively assembled at two ends of the second heat exchange small tubes; One of the second water distribution shells is connected to the baffle elbow; The other second water distribution shell is connected to the other baffle elbow, or connected to the circulation inlet pipe; The inner diameter of the second heat exchange small tube is larger than the inner diameter of the first heat exchange small tube.

10. The refrigeration cycle system with phase change according to any one of claims 7-9, characterized in that: The direct current tube includes a circular tube part and a square tube part; The square tube part is used for connecting and assembling the first heat exchange component and the second heat exchange component; The circular tube parts are respectively connected to two ends of the square tube part, and are respectively used for connecting to a refrigerant pump and a cold storage tank.

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