Ice-making circulating cold supply system

Abstract

The invention relates to an ice-making circulating cold supply system. The ice-making circulating cold supply system comprises an ice making unit, a refrigerant pump, an ice slurry heat exchanger, an ice slurry generator, an ice storage box, an ice slurry pump, a cold supply device, a cooling capacity conveying pump and a user circulating pump. The ice making unit, the refrigerant pump and the ice slurry heat exchanger are sequentially connected through pipelines to form refrigerant circulation; the ice slurry heat exchanger, the ice slurry generator, the ice storage box and the ice slurry pump are sequentially connected through pipelines to form ice slurry circulation; the ice storage box, the cold supply device and the cooling capacity conveying pump are sequentially connected through pipelines to form cold supply circulation. The cold supply device, the user side and the user circulating pump are sequentially connected through pipelines to form user circulation. The ice-making circulating cold supply system has the advantage of saving more energy consumption and cost.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving refrigeration equipment, and particularly to an ice-making circulating cooling system. Background Art

[0002] The refrigeration cycle system realizes heat transfer through the phase change of the refrigerant, and mainly consists of four major components: a compressor, a condenser, an expansion valve, and an evaporator. The compressor compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure gas, and then cools it into a high-pressure liquid in the condenser; after passing through the expansion valve, the pressure and temperature of the high-pressure liquid decrease, becoming a mixture of low-temperature and low-pressure liquid and gas; finally, in the evaporator, the refrigerant evaporates and absorbs heat to achieve the refrigeration effect.

[0003] In the air-conditioning refrigeration cycle system of the refrigeration cycle system, heat transfer is realized through the phase change of the refrigerant, and it mainly consists of four major components: a compressor, a condenser, an expansion valve, and an evaporator. The compressor compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure gas, and then cools it into a high-pressure liquid in the condenser; after passing through the expansion valve, the pressure and temperature of the high-pressure liquid decrease, becoming a mixture of low-temperature and low-pressure liquid and gas; finally, in the evaporator, the refrigerant evaporates and absorbs the indoor heat to achieve the refrigeration effect. This cycle process is continuously repeated to achieve the purpose of continuous refrigeration.

[0004] For the existing air-conditioning refrigeration cycle system, due to its high energy consumption, energy-saving renovations have been carried out in various ways. The key to energy-saving of the air-conditioning refrigeration cycle system lies in optimizing the system design and operation strategy; adopting high-efficiency compressors and heat exchangers, using environmentally friendly refrigerants, reasonably designing pipelines and air ducts, and using intelligent control systems to adjust operation parameters according to load requirements can all improve energy efficiency.

[0005] However, these above measures have limited effects on energy-saving, and as the refrigeration equipment becomes larger and larger, the power consumption demand also climbs accordingly, which in turn brings about an increase in electricity costs. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide an ice-making circulating cooling system, which has the advantage of reducing the total electricity cost.

[0007] One aspect of the present invention provides an ice-making circulating cooling system, including an ice-making unit, a refrigerant pump, an ice slurry heat exchanger, an ice slurry generator, a refrigerator, an ice slurry pump, a cooling device, a cooling capacity transfer pump, and a user circulation pump;

[0008] The ice-making unit, the refrigerant pump, and the ice slurry heat exchanger are sequentially connected through pipelines to form a refrigerant circulation;

[0009] The ice slurry heat exchanger, the ice slurry generator, the refrigerator, and the ice slurry pump are sequentially connected through pipelines to form an ice slurry circulation;

[0010] The ice storage refrigerator, the cooling device, and the cooling capacity transfer pump are sequentially connected through pipelines to form a cooling cycle;

[0011] The cooling device, the user side, and the user circulation pump are sequentially connected through pipelines to form a user circulation;

[0012] The cooling device includes an ice slurry inlet pipe, an ice slurry outlet pipe, a housing with a rectangular cross-section, a partition plate, a sleeve, a graphite powder layer, a heat transfer inner pipe, a user water inlet pipe, and a user water return pipe;

[0013] A cavity is formed inside the housing, and a plurality of the sleeves are vertically penetrated through the housing; the sleeves are arranged in multiple rows; the partition plate is arranged in the cavity between two adjacent rows of the sleeves, so that an S-shaped internal flow channel of the housing is formed in the cavity;

[0014] The ice slurry inlet pipe and the ice slurry outlet pipe are respectively connected to two sides of the housing, and the ice slurry inlet pipe is communicated with one end of the internal flow channel of the housing, and the ice slurry outlet pipe is communicated with the other end of the internal flow channel of the housing;

[0015] The cross-section of the graphite powder layer is annular, the graphite powder layer is sleeved inside the sleeve, and the heat transfer inner pipe is sleeved inside the graphite powder layer; the user water inlet pipe and the user water return pipe are respectively connected to two ends of the heat transfer inner pipe.

[0016] The ice-making cycle cooling system of the present invention has a better effect of saving costs compared with the prior art. First, in the entire cooling system, four cycles are formed. In one of these four cycles, an ice storage refrigerator is provided, and a large amount of ice slurry is stored in the ice storage refrigerator, so that ice slurry can be produced by refrigeration at night and the ice slurry can be used to provide cooling capacity during the day; since the night is in the low electricity consumption period and the cost is lower, the cost of making ice is lower, and the cooling capacity is utilized during the day without using electricity for refrigeration during the day, thus achieving a good effect of saving the refrigeration cost. Second, the cooling device of the present invention has a better cooling capacity utilization effect and is convenient for maintenance compared with the prior art. The reason is that by providing the sleeve, the graphite powder layer, and the heat transfer inner pipe, due to the high heat transfer efficiency of the graphite powder layer, the conduction efficiency of heat (or cooling capacity) is high, and due to the double-pipe structure of the sleeve and the heat transfer inner pipe, the heat transfer inner pipe can be disassembled for easy maintenance.

[0017] Further, a support ring is formed on the inner wall at the bottom end of the sleeve, and a bearing ring is formed on the outer wall at the bottom of the heat transfer inner pipe, and the bearing ring is placed above the support ring;

[0018] The cross-sectional shape of the support ring is a right trapezoid or an isosceles trapezoid, with one of its hypotenuses facing upward;

[0019] The cross-sectional shape of the bearing ring is a right trapezoid, with its right-angled side facing upward;

[0020] The inclined surface of the support ring is in surface contact with the inclined surface of the bearing ring;

[0021] The graphite powder interlayer is placed above the bearing ring.

[0022] Furthermore, an annular groove is formed on the inclined surface of the support ring that contacts the bearing ring;

[0023] An annular convex ring is formed on the inclined surface of the bearing ring that contacts the support ring;

[0024] The convex ring and the groove are arranged in alignment;

[0025] The convex ring and the groove are respectively used to increase the connection tightness between the support ring and the bearing ring, and also to increase the sealing effect of the contact surface.

[0026] Furthermore, one end of the heat transfer inner pipe passes through the support ring, and the bearing ring abuts against the support ring, so that the plane of the bearing ring is placed facing upward;

[0027] A tubular cavity is formed between the sleeve and the heat transfer inner pipe. Graphite powder is placed in this tubular cavity and the graphite powder is extruded to obtain the graphite powder interlayer.

[0028] Furthermore, in the cavity inside the outer shell, two adjacent partition plates are distributed in a staggered manner, and multiple partition plates are arranged in parallel;

[0029] An arc-shaped wall surface is formed on the inner wall of the cavity and at the turning of the flow channel inside the shell;

[0030] Multiple ice slurry inlet pipes are arranged in parallel and are respectively connected to the ice slurry inlet main pipe;

[0031] Multiple ice slurry outlet pipes are arranged in parallel and are respectively connected to the ice slurry outlet main pipe;

[0032] The other end of the ice slurry inlet main pipe is connected to the cold quantity delivery pump, and the other end of the ice slurry outlet main pipe is connected to the ice storage box.

[0033] Furthermore, both ends of the heat transfer inner pipe are respectively connected to the user's water supply pipe and the user's return water pipe through connecting collar rings;

[0034] One end of the connecting collar has a stepped surface, stepped rings are respectively formed at the ends of the user's water supply pipe and the user's water return pipe, the connecting collar is respectively sleeved on the user's water supply pipe and the user's water return pipe, and the stepped ring and the stepped surface are in abutment;

[0035] External threads are respectively formed at both ends of the heat transfer inner pipe, and internal threads are formed on the inner wall of the connecting collar; both ends of the heat transfer inner pipe are threadedly connected to the connecting sleeve.

[0036] Furthermore, anti-slip vertical stripes or anti-slip strips are also formed on the outer wall of the connecting collar;

[0037] A sealing ring is arranged on the contact surface between the stepped surface of the connecting collar and the stepped ring, and this sealing ring is used to strengthen the seal of the contact surface between the stepped ring and the connecting collar.

[0038] Furthermore, the other ends of the multiple user water supply pipes in each row are respectively connected to the water supply branch pipes, and the multiple water supply branch pipes are connected to the water supply main pipe; the materials in the multiple user water supply pipes finally converge into the water supply main pipe;

[0039] The other ends of the multiple user water return pipes in each row are respectively connected to the water return branch pipes, and the multiple water return branch pipes are connected to the water return main pipe; the materials in the multiple user water return pipes finally converge into the water return main pipe;

[0040] The other end of the water supply main pipe is connected to the user circulation pump; the other end of the water return main pipe is connected to the user end.

[0041] Furthermore, a plurality of support columns are respectively installed at the bottom of the housing, and a circular foot pad is formed at the bottom end of the support column;

[0042] The bottom surface of the circular foot pad is lower than the lowest point of the water return branch pipe, so as to facilitate the disassembly of the connection between the water return branch pipe and the heat transfer inner pipe.

[0043] Furthermore, the ice slurry inlet pipe and the ice slurry outlet pipe are arranged in parallel;

[0044] The user water supply pipe and the user water return pipe connected to both ends of the heat transfer inner pipe are coaxial;

[0045] The ice slurry inlet pipe is perpendicular to the heat transfer inner pipe.

[0046] Furthermore, the user water supply pipes in one row located on the side are connected to the water supply main pipe, and the ends of the user water supply pipes in the remaining adjacent two rows are connected through elbows;

[0047] The user water return pipes in one row located on the other side are connected to the water return main pipe, and the ends of the user water return pipes in the remaining adjacent two rows are connected through elbows;

[0048] The heat transfer inner pipe is in an odd number of rows, so that the upper water main pipe and the return water main pipe are respectively located on both sides of the outer shell, and a plurality of rows of the heat transfer inner pipes form an S-shaped flow channel.

[0049] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0050] Figure 1 It is a working principle diagram of an exemplary ice-making cycle cooling system of the present invention;

[0051] Figure 2 It is a three-dimensional structure schematic diagram of an exemplary cooling device of the present invention;

[0052] Figure 3 It is a three-dimensional structure schematic diagram of another perspective of an exemplary cooling device of the present invention;

[0053] Figure 4 It is a three-dimensional structure schematic diagram of a partial structure of an exemplary cooling device of the present invention;

[0054] Figure 5 It is a three-dimensional structure schematic diagram of an assembly structure of an exemplary heat transfer inner pipe, a user upper water pipe, and a connecting collar of the present invention;

[0055] Figure 6 It is Figure 5 a cross-sectional view of the structure shown;

[0056] Figure 7 It is Figure 6 an enlarged view of the partial structure A in

[0057] Figure 8 It is a three-dimensional structure schematic diagram of an assembly structure of an exemplary outer shell, an ice slurry inlet pipe, and an ice slurry outlet pipe of the present invention;

[0058] Figure 9 It is a three-dimensional structure schematic diagram of an exemplary outer shell (removing the top cover) and its internal structure of the present invention;

[0059] Figure 10 It is Figure 9 a top view of the structure shown;

[0060] Figure 11 It is a three-dimensional structure schematic diagram of another exemplary cooling device of the present invention;

[0061] Figure 12 It is a three-dimensional structure schematic diagram of another perspective of another exemplary cooling device of the present invention;

[0062] Figure 13 It is a side view of another exemplary cooling device of the present invention;

[0063] Figure 14 This is a schematic perspective view of an exemplary assembly structure of a sleeve (partial) and a heat transfer inner tube (partial) of the present invention;

[0064] Figure 15 This is a cross-sectional view of an exemplary assembly structure of a sleeve (partial) and a heat transfer inner tube (partial) of the present invention;

[0065] Figure 16 is Figure 15 an enlarged view of the partial structure B in

[0066] Figure 17 This is a cross-sectional view of another exemplary assembly structure of a sleeve (partial) and a heat transfer inner tube (partial) of the present invention;

[0067] Figure 18 This is a schematic principle diagram of the material flow direction inside an exemplary housing of the present invention;

[0068] Figure 19 This is a schematic principle diagram of the material flow direction in an exemplary heat transfer inner tube and its attached pipelines of the present invention. Detailed implementation manners

[0069] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply 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 invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0070] Please refer to Figures 1-19 , an exemplary ice-making cycle cooling system of the present invention includes an ice-making unit, a refrigerant pump, an ice slurry heat exchanger, an ice slurry generator, a refrigerator, an ice slurry pump, a cooling device, a cooling capacity transfer pump, and a user circulation pump;

[0071] The ice-making unit, the refrigerant pump, and the ice slurry heat exchanger are sequentially connected through pipelines to form a refrigerant cycle;

[0072] The ice slurry heat exchanger, the ice slurry generator, the refrigerator, and the ice slurry pump are sequentially connected through pipelines to form an ice slurry cycle;

[0073] The refrigerator, the cooling device, and the cooling capacity transfer pump are sequentially connected through pipelines to form a cooling cycle;

[0074] The cooling device, the user end, and the user circulation pump are sequentially connected through pipelines to form a user circulation;

[0075] The cooling device includes an ice slurry inlet pipe 51, an ice slurry outlet pipe 61, a rectangular outer shell 10, a partition plate 12, a sleeve 21, a graphite powder layer (not shown), a heat transfer inner pipe 22, a user water supply pipe 31, and a user water return pipe 41;

[0076] A cavity is formed inside the outer shell 10, and a plurality of the sleeves 21 are vertically penetrated through the outer shell 10; the sleeves 21 are arranged in multiple rows; the partition plate 12 is arranged in the cavity between two adjacent rows of the sleeves 21, so that an S-shaped inner flow path of the shell is formed in the cavity;

[0077] The ice slurry inlet pipe 51 and the ice slurry outlet pipe 61 are respectively connected to two sides of the outer shell 10, and the ice slurry inlet pipe 51 is communicated with one end of the inner flow path of the shell, and the ice slurry outlet pipe 61 is communicated with the other end of the inner flow path of the shell;

[0078] The cross section of the graphite powder layer is annular, the graphite powder layer is sleeved inside the sleeve 21, and the heat transfer inner pipe 22 is sleeved inside the graphite powder layer; the user water supply pipe 31 and the user water return pipe 41 are respectively connected to two ends of the heat transfer inner pipe 22.

[0079] The ice-making circulation cooling system of the present invention has a better effect of cost saving compared with the prior art. First, in the whole cooling system, four circulations are formed. In one of the four circulations, a refrigerator is provided, and a large amount of ice slurry is stored in the refrigerator, so that ice slurry can be produced by refrigeration at night and the cold quantity can be provided by using the ice slurry during the day; since the night is in the low valley of electricity consumption and the cost is lower, the cost of making ice is lower, and these cold quantities are utilized during the day without using electricity for refrigeration during the day, thus achieving a very good effect of saving the refrigeration cost. Second, the cooling device of the present invention has a better cold quantity utilization effect and is convenient for maintenance compared with the prior art. The reason is that by arranging the sleeve 21, the graphite powder layer, and the heat transfer inner pipe 22, due to the high heat transfer efficiency of the graphite powder layer, the conduction efficiency of heat (or cold quantity) is high, and due to the double-pipe structure of the sleeve 21 and the heat transfer inner pipe 22, the heat transfer inner pipe 22 can be disassembled for easy maintenance. In the present invention, the heat transfer inner pipe 22 and the sleeve 21 can be relatively disassembled, so as to achieve the effect of convenient repair and maintenance. Since the ice slurry flows in the cavity inside the outer shell 10 and the cooled water flows in the heat transfer inner pipe 22, there may be leakage points or corrosion points after long-term use. The detachable solution provided by the present invention can facilitate repair and maintenance.

[0080] The preparation method of the graphite powder interlayer in the present invention is to fill the space between the sleeve 21 and the heat transfer inner tube 22 with graphite powder, and then compact or press it to obtain a compact graphite powder interlayer.

[0081] In some preferred embodiments, the sleeve 21 and the heat transfer inner tube 22 are respectively made of copper material. The copper material here includes pure copper material and copper alloy material.

[0082] In some preferred embodiments, the thickness of the graphite powder interlayer is 3 - 20 mm. In other words, the space thickness between the heat transfer inner tube 22 and the sleeve 21 is 3 - 20 mm.

[0083] In some preferred embodiments, a support ring 23 is formed on the inner wall of the bottom end of the sleeve 21, and a bearing ring 24 is formed on the outer wall of the bottom of the heat transfer inner tube 22. The bearing ring 24 is placed above the support ring 23;

[0084] The cross-sectional shape of the support ring 23 is a right trapezoid or an isosceles trapezoid, and one of its hypotenuses faces upward;

[0085] The cross-sectional shape of the bearing ring 24 is a right trapezoid, and its right angle side faces upward;

[0086] The inclined surface of the support ring 23 is in surface contact with the inclined surface of the bearing ring 24;

[0087] The graphite powder interlayer is placed above the bearing ring 24.

[0088] The support ring 23 and the bearing ring 24 form a pair of mutually cooperating structures. The support ring 23 is used to support the bearing ring 24, and the bearing ring 24 is used to bear the graphite powder interlayer.

[0089] In some preferred embodiments, the thickness of the support ring 23 is the same as the thickness of the graphite powder interlayer, and the thickness of the bearing ring 24 is the same as the thickness of the graphite powder interlayer.

[0090] In some other preferred embodiments, the thickness of the support ring 23 is slightly less than the thickness of the graphite powder interlayer, and the thickness of the bearing ring 24 is slightly less than the thickness of the graphite powder interlayer. Slightly less means less by 0.1 - 2 mm.

[0091] The attached drawings illustrate two cross-sectional shapes of the support ring 23, one is a right trapezoid and the other is an isosceles trapezoid. The surface where the support ring 23 contacts the bearing ring 24 is an inclined surface, which means the surface of the support ring 23 for contact is an inclined surface, and the surface of the bearing ring 24 for contact is also an inclined surface.

[0092] In some preferred embodiments, an annular groove is formed on the inclined surface of the support ring 23 that contacts the bearing ring 24;

[0093] On the inclined surface of the bearing ring 24 that contacts the support ring 23, an annular convex ring 25 is formed;

[0094] The convex ring 25 is arranged in alignment with the groove;

[0095] The convex ring 25 and the groove are respectively used to increase the connection tightness between the support ring 23 and the bearing ring 24, and also to increase the sealing effect of the contact surface.

[0096] In order to improve the sealing effect of the contact surface, a convex ring 25 is provided on the bearing ring 24, and a groove is provided on the support ring 23. The convex ring 25 cooperates with the groove to improve the sealing effect.

[0097] In some preferred embodiments, one end of the heat transfer inner tube 22 passes through the support ring 23, and the bearing ring 24 is abutted against the support ring 23, so that the plane of the bearing ring 24 is placed upward;

[0098] A tubular cavity is formed between the sleeve 21 and the heat transfer inner tube 22. Graphite powder is placed in the tubular cavity and the graphite powder is extruded to obtain the graphite powder interlayer.

[0099] The upper surface of the bearing ring 24 is a plane to facilitate the placement of the graphite powder interlayer.

[0100] In some preferred embodiments, in the cavity within the outer shell 10, two adjacent partition plates 12 are staggered, and a plurality of the partition plates 12 are arranged in parallel;

[0101] On the inner wall of the cavity, and at the turning of the flow channel within the housing, an arc-shaped wall surface M is formed;

[0102] A plurality of the ice slurry inlet pipes 51 are arranged in parallel and are respectively connected to the ice slurry inlet main pipe 52;

[0103] A plurality of the ice slurry outlet pipes 61 are arranged in parallel and are respectively connected to the ice slurry outlet main pipe 62;

[0104] The other end of the ice slurry inlet main pipe 52 is connected to the cold quantity delivery pump, and the other end of the ice slurry outlet main pipe 62 is connected to the ice storage box.

[0105] In some preferred embodiments, both ends of the heat transfer inner tube 22 are respectively connected to the user water supply pipe 31 and the user return water pipe 41 through connection collar rings 70;

[0106] Such as Figure 6 and Figure 7, one end of the connecting collar 70 has a stepped surface, stepped rings are respectively formed at the ends of the user's water supply pipe 31 and the user's water return pipe 41, the connecting collar 70 is respectively sleeved on the user's water supply pipe 31 and the user's water return pipe 41, and the stepped ring and the stepped surface are in contact;

[0107] External threads are respectively formed at both ends of the heat transfer inner pipe 22, and internal threads are formed on the inner wall of the connecting collar 70; both ends of the heat transfer inner pipe 22 are threadedly connected to the connecting sleeve 21.

[0108] In some preferred embodiments, anti-slip vertical lines or anti-slip strips are further formed on the outer wall of the connecting collar 70;

[0109] A sealing ring is arranged on the contact surface between the stepped surface of the connecting collar 70 and the stepped ring, and this sealing ring is used to strengthen the seal of the contact surface between the stepped ring and the connecting collar 70.

[0110] Such as Figure 2 and Figure 3 In the embodiments shown, in some preferred embodiments, the other ends of the multiple user water supply pipes 31 in each row are respectively connected to the water supply branch pipes 32, and the multiple water supply branch pipes 32 are connected to the water supply main pipe 33; the materials in the multiple user water supply pipes 31 finally converge into the water supply main pipe 33;

[0111] The other ends of the multiple user water return pipes 41 in each row are respectively connected to the water return branch pipes 42, and the multiple water return branch pipes 42 are connected to the water return main pipe 43; the materials in the multiple user water return pipes 41 finally converge into the water return main pipe 43;

[0112] The other end of the water supply main pipe 33 is connected to the user circulation pump; the other end of the water return main pipe 43 is connected to the user end.

[0113] In some preferred embodiments, a plurality of support columns 11 are respectively installed at the bottom of the housing 10, and a circular foot pad is formed at the bottom end of the support column 11;

[0114] The bottom surface of the circular foot pad is lower than the lowest point of the water return branch pipe 42, so as to facilitate the disassembly of the connection between the water return branch pipe 42 and the heat transfer inner pipe 22.

[0115] In some preferred embodiments, the ice slurry inlet pipe 51 and the ice slurry outlet pipe 61 are arranged in parallel;

[0116] The user water supply pipe 31 and the user water return pipe 41 connected to both ends of the heat transfer inner pipe 22 are coaxial;

[0117] The ice slurry inlet pipe 51 is perpendicular to the heat transfer inner pipe 22.

[0118] As Figures 11-13 in the embodiment of Figures 11-13 , in some other preferred embodiments, a row of the user water supply pipes 31 located on the side is connected to the main water supply pipe 33, and the ends of the user water supply pipes 31 of the remaining adjacent two rows are connected by elbows 34;

[0119] A row of the user water return pipes 41 located on the other side is connected to the main water return pipe 43, and the ends of the user water return pipes 41 of the remaining adjacent two rows are connected by elbows 34;

[0120] The heat transfer inner pipes 22 are in odd rows, so that the main water supply pipe 33 and the main water return pipe 43 are respectively located on both sides of the housing 10, and a plurality of the heat transfer inner pipes 22 form an S-shaped flow channel.

[0121] In Figures 11-13 the embodiment of Figures 11-13 , the flow directions of the first row and the third row are the same, in the same direction; the flow directions of the first row and the second row are opposite, in the reverse direction.

[0122] The flow direction of the water in the heat transfer inner pipes 22 of the present invention is perpendicular to the flow direction of the ice slurry in the housing 10; and the S-shaped flow channel in the housing 10 is horizontal, while the S-shaped flow channel formed in the heat transfer inner pipes 22 is vertical.

[0123] After coming out of the user water supply pipes 31 and the user water return pipes 41, there are at least two embodiments of the present invention. One is to first converge into the water supply branch pipes 32 and the water return branch pipes 42, and then converge into the main water supply pipe 33 and the main water return pipe 43; the other is that one row is connected to the main water supply pipe 33, another row is connected to the main water return pipe 43, and the adjacent two rows in the remaining rows are connected by elbows 34. These two different structures result in two different flow directions. The former is in the form of total - sub - re - sub - sub - total, and the latter is in the form of total - sub - total; the water flow directions among the multiple heat transfer inner pipes 22 in the former are consistent and parallel; the water flow directions in the multiple heat transfer inner pipes 22 in the latter are staggered, including two types: in the same direction (with one row interval) and in the reverse direction (adjacent two rows). In the former way, heat exchange occurs only once; in the latter way, heat exchange occurs multiple times.

[0124] The working principle of the ice - making cycle refrigeration system of the present invention:

[0125] Cold storage process. In the refrigerant cycle, a low temperature below 0 °C is generated, and then the low temperature enters the ice slurry cycle. Specifically, the cold quantity obtained from the refrigerant cycle is transported to the ice slurry heat exchanger, and ice slurry (a mixed product of water and ice) is generated at the ice slurry generator, and the ice slurry converges into the ice storage tank. The volume of the ice storage tank is relatively large, which can reach dozens of cubic meters or even hundreds of cubic meters. In the ice storage tank, a large amount of ice slurry is stored. The outer wall of the ice storage tank is wrapped with heat - insulating and cold - insulating materials to prevent the loss of cold quantity.

[0126] When using cooling capacity, the cooling capacity enters the cooling cycle, and the user obtains the cooling capacity from the cooling cycle through the user cycle. Specifically, the cooling capacity delivery pump extracts the cooling capacity and conducts heat exchange in the cooling device, thereby providing cooling capacity to the user cycle. The heat brought by the user cycle is taken back to the ice storage refrigerator through the cooling cycle, and the temperature in the ice storage refrigerator gradually rises. When the cooling capacity is used to a certain extent, the refrigerant cycle and the ice slurry cycle are started again.

[0127] In the above process, the processes of ice storage and cold storage occur at night during the low electricity consumption period when the electricity price is low, so the cost is low. And the process of using the cooling capacity occurs during the day, when there is no need to consume electricity for refrigeration. Therefore, the cost of electricity-driven refrigeration is greatly reduced.

[0128] The present invention also innovatively introduces a cooling device in which there are two material flows in different directions. One is the ice slurry, which comes from the ice storage refrigerator, and the other is the circulating water, which comes from the user side.

[0129] The ice slurry enters the cavity of the outer shell through the ice slurry inlet pipe, then passes through the S-shaped inner flow path of the shell, and finally flows out through the ice slurry outlet pipe.

[0130] The circulating water enters from the upper water main pipe, then flows through the heat transfer inner pipe, and then flows out from the return water main pipe. In some embodiments, the flow direction of the circulating water in the heat transfer inner pipe is the same, corresponding to the embodiment as Figure 2 shown; in some other embodiments, the flow direction in the heat transfer inner pipe is opposite, corresponding to the embodiment as Figure 11 shown.

[0131] The cooling capacity is conducted from the ice slurry in the cavity of the outer shell 10 to the wall surface of the sleeve 21, then conducted through the sleeve 21 to the graphite powder interlayer, and then conducted from the graphite powder interlayer to the wall surface of the heat transfer inner pipe 22. Through the heat transfer inner pipe, the cooling capacity is transferred to the circulating water. While the circulating water is cooled, the heat is transferred in the reverse direction as described above. Finally, the ice slurry absorbs the heat and the circulating water is cooled. The temperature of the circulating water can be reduced to 5°C, which is sufficient to provide refrigeration for the user side, and the user side no longer needs a refrigeration device.

[0132] In the present invention, the user side can be an air-conditioning refrigeration unit.

[0133] The present invention not only ensures the heat exchange efficiency but also is convenient for disassembly and maintenance. On this premise, the present invention also realizes the saving of electricity cost and greatly reduces the refrigeration cost of air-conditioning users.

[0134] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to 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 invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. An ice-making circulation refrigeration system, characterized in that: Including ice making unit, refrigerant pump, ice slurry heat exchanger, ice slurry generator, ice storage bin, ice slurry pump, cooling device, cooling capacity delivery pump, user circulation pump; The ice making unit, the refrigerant pump, and the ice slurry heat exchanger are connected in sequence through pipelines to form a refrigerant circulation; The ice slurry heat exchanger, the ice slurry generator, the ice storage bin, and the ice slurry pump are connected in sequence through pipelines to form an ice slurry circulation; The ice storage bin, the cooling device, and the cooling delivery pump are connected in sequence through pipelines to form a cooling cycle; The cooling device, the user end, and the user circulation pump are connected in sequence through pipelines to form a user circulation; The cooling device comprises an ice slurry water inlet pipe, an ice slurry water outlet pipe, a shell with a rectangular cross section, a partition plate, a sleeve, a graphite powder barrier, a heat transfer inner pipe, a user water supply pipe, and a user water return pipe; A cavity is formed in the shell, and a plurality of the sleeves are vertically penetrated on the shell; the sleeves are arranged in multiple rows; a partition plate is arranged in the cavity between two adjacent rows of the sleeves, so that an S-shaped flow channel in the shell is formed in the cavity; The ice slurry water inlet pipe and the ice slurry water outlet pipe are respectively connected to two sides of the shell, and the ice slurry water inlet pipe is connected to one end of the flow channel in the shell, and the ice slurry water outlet pipe is connected to the other end of the flow channel in the shell; The cross section of the graphite powder interlayer is circular, the graphite powder interlayer is sleeved in the sleeve, and the heat transfer inner tube is sleeved in the graphite powder interlayer; the user water supply pipe and the user water return pipe are respectively connected to the two ends of the heat transfer inner tube.

2. The ice-making circulation refrigeration system according to claim 1, characterized in that: The inner wall of the bottom end of the sleeve is formed with a support ring, and the outer wall of the bottom of the heat transfer inner tube is formed with a bearing ring, and the bearing ring is placed above the support ring; The cross-sectional shape of the support ring is a right-angled trapezoid or an isosceles trapezoid, with one hypotenuse facing upwards; The cross-section of the carrying ring is a right-angled trapezoid, with the right-angled side facing upwards; The inclined surface of the support ring is in surface contact with the inclined surface of the carrying ring; The graphite powder spacer is placed above the carrying ring.

3. The ice-making circulation refrigeration system according to claim 2, characterized in that: An annular groove is formed on the inclined surface of the support ring that contacts the carrying ring; An annular convex ring is formed on the inclined surface of the bearing ring in contact with the supporting ring; The convex ring is arranged in alignment with the groove; The protruding ring and the groove are used to increase the connection lock between the support ring and the bearing ring, and are also used to increase the sealing effect of the contact surface.

4. The ice-making circulation refrigeration system according to claim 3, characterized in that: Pass one end of the heat transfer inner tube through the support ring, and place the carrier ring in contact with the support ring so that the plane of the carrier ring faces upward; A tubular cavity is formed between the sleeve and the heat transfer inner tube. Graphite powder is placed in the tubular cavity and extruded to obtain the graphite powder interlayer.

5. The ice-making circulation refrigeration system according to claim 4, characterized in that: In the cavity in the shell, two adjacent partition plates are staggered, and a plurality of partition plates are arranged in parallel; The inner wall of the cavity is located at the turning point of the flow channel in the shell, forming an arc-shaped wall surface; A plurality of ice slurry water inlet pipes are arranged in parallel and are respectively connected to the ice slurry water inlet main pipe; A plurality of ice slurry outlet pipes are arranged in parallel and are respectively connected to the ice slurry outlet main pipe; The other end of the ice slurry water inlet main pipe is connected to the cold delivery pump, and the other end of the ice slurry water outlet main pipe is connected to the ice storage bin.

6. The ice-making circulation refrigeration system according to any one of claims 1 to 5, characterized in that: The two ends of the heat transfer inner tube are respectively connected to the user water supply pipe and the user water return pipe through connecting rings; One end of the connecting collar has a step surface, and the ends of the user water supply pipe and the user water return pipe are respectively formed with step rings, and the connecting collar is respectively sleeved on the user water supply pipe and the user water return pipe, and the step ring abuts against the step surface; Both ends of the heat transfer inner tube are respectively formed with external threads, and the inner wall of the connecting sleeve is formed with internal threads; the two ends of the heat transfer inner tube are respectively threadedly connected with the connecting sleeve.

7. The ice-making circulation refrigeration system according to claim 6, characterized in that: The outer wall of the connecting ring is also formed with anti-skid vertical lines or anti-skid strips; A sealing ring is provided between the step surface of the connecting collar and the contact surface of the step ring, and the sealing ring is used to strengthen the sealing of the contact surface between the step ring and the connecting collar.

8. The ice-making circulation refrigeration system according to claim 6, characterized in that: The other ends of the plurality of user water supply pipes in each row are respectively connected to the water supply branch pipes, and the plurality of water supply branch pipes are connected to the water supply main pipe; the materials in the plurality of user water supply pipes are finally collected in the water supply main pipe; The other ends of the multiple user return pipes in each row are respectively connected to the return branch pipes, and the multiple return branch pipes are connected to the return main pipe; the materials in the multiple user return pipes are finally collected in the return main pipe; The other end of the water supply main pipe is connected to the user circulation pump; the other end of the water return main pipe is connected to the user end.

9. The ice-making circulation refrigeration system according to claim 8, characterized in that: A plurality of support columns are respectively installed at the bottom of the housing, and a circular foot is formed at the bottom end of the support column; The bottom surface of the circular foot is lower than the lowest point of the water return branch pipe, so as to facilitate the disassembly of the connection between the water return branch pipe and the heat transfer inner pipe.

10. The ice-making circulation refrigeration system according to claim 6, characterized in that: The user water supply pipes in a row located at the side are connected to the water supply main, and the ends of the user water supply pipes in the remaining two adjacent rows are connected through elbows; The user return pipes in one row on the other side are connected to the return main pipe, and the ends of the user return pipes in the other two adjacent rows are connected through elbows; The heat transfer inner tubes are arranged in an odd number of rows, so that the water supply main pipe and the water return main pipe are respectively located on both sides of the outer shell, so that the multiple rows of heat transfer inner tubes form an S-shaped flow channel.

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