Anti-icing heat exchanger and dynamic ice storage system

Abstract

The present invention relates to an anti-icing heat exchanger and a dynamic ice storage system, the anti-icing heat exchanger comprising: a shell, provided with a first inlet for introducing a cooling medium and a first outlet for discharging the cooling medium; a heat exchange pipe, arranged in the shell, one end of the heat exchange pipe is provided with a second inlet for introducing a liquid to be cooled, and the other end is provided with a second outlet for discharging the liquid to be cooled; and an ice removal component, arranged in the heat exchange pipe, the ice removal component comprises a rotating shaft, an impeller and an ice scraper; the rotating shaft is arranged along the axial direction of the heat exchange pipe; the ice scraper is connected to the rotating shaft; the impeller is assembled on the rotating shaft, and can rotate under the impetus of the liquid to be cooled and drive the ice scraper to rotate, so that the ice scraper acts on the inner wall of the heat exchange pipe. The anti-icing heat exchanger can prevent ice blocking, thereby extending the effective cold storage time, improving the cold storage time utilization rate and cold storage efficiency.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to an anti-ice blockage heat exchanger and a dynamic ice storage system. Background Art

[0002] Ice storage technology is a technology that stores cold energy in the form of ice during low-power load periods and melts the ice to provide cooling during peak power load periods to meet users' cooling needs. Ice storage technology has the characteristics of saving operating costs, balancing grid loads, and significant environmental benefits.

[0003] Ice storage technology is divided into two categories: static ice storage technology and dynamic ice storage technology. Static ice storage technology is a technology that freezes water, which is a cold storage medium, into solid ice on the heat transfer wall through natural convection and solid heat conduction. The advantages of static ice storage technology are: simple structure, reliable operation, ice storage rate of more than 60%, high space utilization, small footprint, etc. The disadvantages of static ice storage technology are: low ice making temperature, low efficiency of the refrigeration system during ice making; low heat transfer efficiency, slow ice making speed; slow ice melting speed, poor load following performance, etc.

[0004] Dynamic ice storage technology is a technology that uses water as a cold storage medium to exchange heat with a heat transfer wall under strong convection conditions. After the water is cooled to supercooled water, the supercooled water is made into ice slurry through a supercooling release device. The advantages of dynamic ice storage technology are: high ice making temperature, high refrigeration system efficiency during ice making; high heat transfer efficiency, fast ice making speed; fast cooling speed, good load following performance, etc.

[0005] The disadvantages of dynamic ice storage technology are: the ice storage rate is only 30%, the ice storage rate is difficult to increase, the space utilization rate is low, and the floor area is large; for the same storage capacity, the floor area is twice that of static ice storage. In addition, when storing ice at night, the heat exchange equipment is prone to ice blockage, so it is necessary to stop ice storage at regular intervals, start the chilled water system, and use backwashing to eliminate ice blockage. In the actual operation process, each backwashing time is 20 minutes. When storing cold during the off-peak period of electricity consumption, the entire cold storage process generally requires 6 to 8 backwashings, and the total backwashing time is more than 120 minutes. Therefore, there are problems such as short effective cold storage time, low utilization of cold storage time, and low cold storage efficiency. Summary of the invention

[0006] Based on this, it is necessary to provide an anti-icing heat exchanger and a dynamic ice storage system that can prevent ice blockage, thereby extending the effective cold storage time, and improving the utilization rate of the cold storage time and the cold storage efficiency.

[0007] An anti-ice blockage heat exchanger, comprising:

[0008] A housing having a first inlet for introducing a cooling medium and a first outlet for discharging the cooling medium;

[0009] a heat exchange pipe, disposed in the shell, wherein one end of the heat exchange pipe is provided with a second inlet for introducing the liquid to be cooled, and the other end of the heat exchange pipe is provided with a second outlet for discharging the liquid to be cooled; and

[0010] A de-icing assembly is arranged in the heat exchange pipe, and the de-icing assembly includes a rotating shaft, an impeller and an ice scraper; the rotating shaft is arranged along the axial direction of the heat exchange pipe; the ice scraper is connected to the rotating shaft; the impeller is assembled on the rotating shaft, and can rotate under the impetus of the cooling liquid and drive the ice scraper to rotate, so that the ice scraper acts on the inner wall of the heat exchange pipe.

[0011] In some embodiments, the ice scraper is a brush; and / or

[0012] The ice scraper is arranged around the rotating shaft.

[0013] In some embodiments, there are a plurality of ice scraping members; the plurality of ice scraping members are spaced apart along the axial direction of the rotating shaft.

[0014] In some embodiments, the number of the impellers is at least two, and one impeller is respectively provided at both ends of the rotating shaft, and the ice scraper is provided between the two impellers at the two ends.

[0015] In some embodiments, the de-icing assembly further includes a bearing, and the impeller is assembled on the rotating shaft through the bearing.

[0016] In some of the embodiments, the deicing assembly further includes a fixing member and a bearing seat, the bearing is disposed in the bearing seat, and the fixing member is respectively connected to the bearing seat and an inner wall of the heat exchange pipe.

[0017] A dynamic ice storage system, comprising:

[0018] A supercooled water thermal storage device, comprising an ice slurry generator, an ice storage device, and an anti-ice blockage heat exchanger as described in any one of the above items, wherein the outlet of the ice storage device is connected to the second inlet of the heat exchange pipe, the second outlet of the heat exchange pipe is connected to the inlet of the ice slurry generator, and the outlet of the ice slurry generator is connected to the inlet of the ice storage device;

[0019] a cooling medium circulation device, connected to the first inlet and the first outlet of the housing; and

[0020] The cooling device is used to cool the supercooled water in the ice storage device for cooling.

[0021] In some of the embodiments, the supercooled water thermal storage device further includes a bubble generator, and the bubble generator is disposed on a connecting pipeline between the outlet of the ice storage device and the second inlet of the heat exchange pipeline.

[0022] In some embodiments, the supercooled water thermal storage device further includes a first gas-liquid separator, which is disposed on a connecting pipeline between the second outlet of the heat exchange pipeline and the inlet of the ice slurry generator.

[0023] In some embodiments, the cooling equipment includes a supercooled water cooling device and a chilled water cooling device, the supercooled water cooling device includes a first cooling heat exchanger and a second gas-liquid separator, the first cooling heat exchanger is used to exchange heat with the chilled water cooling device to provide cooling to the chilled water cooling device, the supercooled water inlet of the first cooling heat exchanger is connected to the outlet of the ice storage device, the second gas-liquid separator is arranged on the connecting pipeline between the supercooled water inlet and the outlet of the ice storage device, and the first cooling heat exchanger is also connected to the inlet of the ice storage device to circulate the supercooled water.

[0024] In some of the embodiments, the cooling medium circulation device includes a dual-mode refrigeration host;

[0025] When the dual-mode refrigeration host is in a cold storage state, the dual-mode refrigeration host is connected to the first inlet and the first outlet of the shell to circulate the cooling medium in the dual-mode refrigeration host; or

[0026] When the dual-mode refrigeration host is in the cooling condition, the dynamic ice storage system also includes a second cooling heat exchanger. The dual-mode refrigeration host is connected to the second cooling heat exchanger to circulate the cooling medium in the dual-mode refrigeration host. The second cooling heat exchanger is also used to exchange heat with the chilled water cooling device to provide cooling to the chilled water cooling device.

[0027] In some of the embodiments, the chilled water cooling device includes a cooling terminal, a water collector, a chilled water circulation pump and a water distributor;

[0028] The cooling terminal, the water collector, the chilled water circulation pump, the first cooling heat exchanger and the water distributor are connected end to end in sequence to form a first chilled water cycle during cooling; and / or,

[0029] The cooling terminal, the water collector, the chilled water circulation pump, the second cooling heat exchanger and the water distributor are connected end to end in sequence to form a second chilled water cycle during cooling.

[0030] In some embodiments, the ice storage device includes an ice storage container and an ice-water separator, the ice-water separator is arranged in the ice storage container to divide the ice storage container into an ice slurry area and a cold water area, the ice slurry generator is connected to the ice slurry area of ​​the ice storage container, and the second inlet of the anti-ice blockage heat exchanger is connected to the cold water area of ​​the ice storage container.

[0031] Beneficial Effects

[0032] The above-mentioned anti-ice blockage heat exchanger can be used in a dynamic ice storage system. The cooling medium is introduced through the first inlet. When the liquid to be cooled enters the heat exchange pipe from the second inlet and exchanges heat with the cooling medium in the shell in the heat exchange pipe, the impeller rotates under the push of the liquid to be cooled and drives the ice scraper to rotate, so that the ice scraper acts on the inner wall of the heat exchange pipe, and promptly scrapes off the ice slurry formed on the inner wall of the heat exchange pipe. The scraped ice slurry is taken out of the anti-ice blockage heat exchanger by the coolant, so that the ice slurry will not be enriched and accumulated on the inner wall of the heat exchange pipe. Therefore, the use of the anti-ice blockage heat exchanger does not require recoil deicing, and ice blockage failures are avoided. In addition, the rotation of the ice scraper causes mechanical disturbances in the liquid to be cooled, which can promote sufficient heat exchange and improve heat exchange efficiency.

[0033] The above-mentioned dynamic ice storage system adopts the above-mentioned anti-ice blockage heat exchanger, which avoids the problems of short effective cold storage time, low cold storage time utilization, and low cold storage efficiency caused by ice blockage failure in traditional dynamic ice storage technology. It does not need to perform recoil deicing, and can continuously and dynamically store ice. The low-peak cold storage time is extended by more than 120 minutes, which significantly extends the effective cold storage time and improves the cold storage time utilization and cold storage efficiency. It has been verified that the ice storage rate of the dynamic ice storage system using the above-mentioned anti-ice blockage heat exchanger reaches more than 60%; therefore, the space utilization rate of its ice storage is increased by more than 50%, and the floor area is reduced by more than 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of an anti-icing heat exchanger according to an embodiment of the present invention;

[0035] Figure 2 Schematic diagram of a dynamic ice storage system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] See also Figure 1 According to one embodiment of the present invention, an anti-icing heat exchanger 100 is provided, comprising a shell 110, a heat exchange pipe 120 and a deicing assembly (not shown).

[0043] The housing 110 is provided with a first inlet 101 for introducing a cooling medium and a first outlet 102 for discharging the cooling medium.

[0044] The heat exchange pipe 120 is disposed in the shell 110 . One end of the heat exchange pipe 120 is provided with a second inlet 103 for introducing the liquid to be cooled, and the other end is provided with a second outlet 104 for discharging the liquid to be cooled.

[0045] The de-icing assembly is arranged in the heat exchange pipe 120. The de-icing assembly includes a rotating shaft 131, an impeller 132 and an ice scraper 133. The rotating shaft 131 is arranged along the axial direction of the heat exchange pipe 120; the ice scraper 133 is connected to the rotating shaft 131; the impeller 132 is assembled on the rotating shaft 131, and can rotate under the impetus of the cooling liquid and drive the ice scraper 133 to rotate, so that the ice scraper 133 acts on the inner wall of the heat exchange pipe 120.

[0046] The anti-icing heat exchanger 100 can be used in a dynamic ice storage system 10 (see Figure 2 ), a cooling medium is introduced through the first inlet 101. When the liquid to be cooled enters the heat exchange pipe 120 from the second inlet 103 and exchanges heat with the cooling medium in the shell 110 in the heat exchange pipe 120, the impeller rotates under the push of the liquid to be cooled and drives the ice scraper 133 to rotate, so that the ice scraper 133 acts on the inner wall of the heat exchange pipe 120 to scrape off the ice slurry formed on the inner wall of the heat exchange pipe 120 in time. The scraped ice slurry is taken out of the anti-icing heat exchanger 100 by the cooling liquid, so that the ice slurry will not be enriched and accumulated on the inner wall of the heat exchange pipe 120. Therefore, the use of the anti-icing heat exchanger 100 does not require backwashing to remove ice, and ice blockage failures are avoided. In addition, the rotation of the ice scraper 133 causes mechanical disturbances in the liquid to be cooled, which can promote sufficient heat exchange and improve heat exchange efficiency.

[0047] Furthermore, the anti-ice blockage heat exchanger 100 is used in the dynamic ice storage system 10, which avoids the problems of short effective cold storage time, low cold storage time utilization, and low cold storage efficiency caused by ice blockage failure in traditional dynamic ice storage technology. It does not need to perform recoil defrosting, can continuously store ice dynamically, and the low valley cold storage time is extended by more than 120 minutes, which significantly extends the effective cold storage time and improves the cold storage time utilization and cold storage efficiency. It has been verified that the ice storage rate of the dynamic ice storage system 10 using the anti-ice blockage heat exchanger 100 reaches more than 60%; therefore, the space utilization rate of its ice storage is increased by more than 50%, and the floor area is reduced by more than 50%.

[0048] Among them, ice packing factor: in the dynamic ice storage system 10, not all the water in the ice storage device 300 is frozen, and the ice packing factor (IPF) is often used to measure the volume share of ice in the ice storage container of the ice storage device 300;

[0049] IPF=V1 / V2×100%

[0050] Where: V1——the volume of ice in the ice storage container (m 3 );

[0051] V2——Effective volume of ice storage container (m 3 ).

[0052] Generally, when the anti-icing heat exchanger 100 is used in the dynamic ice storage system 10, the cooling medium is ethylene glycol solution. The cooling liquid is cold water.

[0053] Furthermore, the first inlet 101 is disposed at one end of the housing 110 closer to the second outlet 104, and the first outlet 102 is disposed at one end of the housing 110 closer to the second inlet 103. In this way, the cooling medium and the liquid to be cooled form a countercurrent flow, thereby improving the heat exchange efficiency.

[0054] Furthermore, the heat exchange pipe 120 is coaxially arranged with the rotating shaft 131 .

[0055] In some embodiments, the ice scraper 133 is a brush. Further, the ice scraper 133 is arranged around the rotating shaft 131.

[0056] In some embodiments, there are multiple ice scraping members 133 ; the multiple ice scraping members 133 are arranged at intervals along the axial direction of the rotating shaft 131 .

[0057] In some embodiments, the number of impellers 132 is at least two, and an impeller 132 is respectively provided at both ends of the rotating shaft 131, and the ice scraper 133 is disposed between the two impellers 132 at the two ends. In this specific example, the number of impellers 132 is two. It is understood that when the number of impellers 132 is three or more, it can be disposed between the two impellers 132; it can be disposed adjacent to the ice scraper 133, or it can be disposed between two adjacent ice scrapers 133.

[0058] In some embodiments, the de-icing assembly further includes a bearing (not shown), and the impeller 132 is assembled on the rotating shaft 131 through the bearing.

[0059] In some embodiments, the deicing assembly further includes a fixing member 134 and a bearing seat 135, the bearing is disposed in the bearing seat 135, and the fixing member 134 is respectively connected to the bearing seat 135 and the inner wall of the heat exchange pipe 120. The fixing member 134 is arranged in this way to improve the stability of the deicing assembly during operation. It can be understood that the number of bearings, fixing members 134 and bearing seats 135 is set correspondingly according to the number of impellers 132.

[0060] Furthermore, the connection between the fixing member 134 and the inner wall of the bearing seat 135 and the heat exchange pipe 120 can be made by welding. Furthermore, the fixing member 134 can be provided with a water hole (not shown) to avoid affecting the water flow of the water inlet.

[0061] See also Figure 2 One embodiment of the present invention provides a dynamic ice storage system 10, including a supercooled water storage device, a cooling medium circulation device and a cooling device. Figure 2 The direction indicated by the arrow represents the flow direction of the fluid.

[0062] The supercooled water storage device includes the anti-icing heat exchanger 100 (such as Figure 1 As shown), an ice slurry generator 200 and an ice storage device 300. The outlet of the ice storage device 300 is communicated with the second inlet 103 of the heat exchange pipe 120, the second outlet 104 of the heat exchange pipe 120 is communicated with the inlet of the ice slurry generator 200, and the outlet of the ice slurry generator 200 is communicated with the inlet of the ice storage device 300.

[0063] The cooling medium circulation device is connected to the first inlet 101 and the first outlet 102 of the housing 110 to form a cooling medium circulation loop.

[0064] The cooling device is used to cool the supercooled water in the ice storage device 300 for cooling.

[0065] Generally, the cooling medium in the dynamic ice storage system 10 is ethylene glycol solution, and the cooling liquid is cold water.

[0066] The above-mentioned dynamic ice storage system 10, in which the supercooled water storage device adopts the above-mentioned anti-ice blockage heat exchanger 100, when in the cold storage state at night, the cold water to be cooled enters the anti-ice blockage heat exchanger 100 from the second inlet 103 to drive the impeller 132 to rotate, and then drives the ice scraper 133 to rotate, so that the ice scraper 133 acts on the inner wall of the heat exchange pipe 120, and promptly scrapes off the ice slurry formed on the inner wall of the heat exchange pipe 120, and the supercooled water cooled by the cold water enters the ice slurry generator 200 from the second outlet 104 to generate ice slurry, and the newly generated mixture of ice slurry and supercooled water enters the ice storage device 300.

[0067] While the cold water is cooled into supercooled water, the ethylene glycol solution in the anti-icing heat exchanger 100 is heated up and cooled down in the cooling medium circulation device to circulate. In the cold storage state, the circulation of the ethylene glycol solution in the cooling medium circulation device and the circulation of the supercooled water in the supercooled water storage device continue until 80% of the space in the ice storage device 300 is filled with ice slurry and the temperature of the supercooled water reaches -3°C, indicating that the cold storage process is completed. It has been verified that at the end of cold storage, the ice storage device 300 in the supercooled water storage device is in an ice-water mixture state, and the ice storage rate can reach more than 60%.

[0068] During the daytime cooling state, the ice slurry generator 200 does not work, and the cooling device works to cool the supercooled water in the ice storage device 300 and use it to provide cooling to users.

[0069] Therefore, the above-mentioned dynamic ice storage system 10 avoids the problems of short effective cold storage time, low cold storage time utilization, low cold storage efficiency and the like caused by ice blockage failures in traditional dynamic ice storage technology. There is no need for recoil defrosting, and ice can be stored dynamically continuously. The low-peak cold storage time is extended by more than 120 minutes, which significantly extends the effective cold storage time and improves the cold storage time utilization and cold storage efficiency.

[0070] Furthermore, the supercooled water cold storage device further includes a cold water circulation pump 411, which is disposed on a connecting pipe between the outlet of the ice storage device 300 and the second inlet 103 of the heat exchange pipe 120. Furthermore, a first valve 421 is disposed between the cold water circulation pump 411 and the anti-icing heat exchanger 100. Thus, 2.5°C cold water can be pressurized by the cold water circulation pump 411, pass through the first valve 421, and enter the anti-icing heat exchanger 100 to be cooled into -2.5°C supercooled water.

[0071] In some embodiments, the supercooled water cold storage device further includes a bubble generator 500, which is disposed on a connecting pipe between the outlet of the ice storage device 300 and the second inlet 103 of the heat exchange pipe 120. By arranging the bubble generator 500 before the second inlet 103 of the anti-icing heat exchanger 100, a large number of bubbles are mixed in the cold water to be cooled, thereby increasing the supercooled water heat exchange area of ​​the cold water in the anti-icing heat exchanger 100, which is beneficial to improving the supercooling degree and heat exchange efficiency of the supercooled water.

[0072] Furthermore, the bubble generator 500 is a micro bubble generator. In a specific example, the cold water with micro bubbles added is pressurized by the cold water circulation pump 411, and the pressurized 2.5°C cold water enters the anti-icing heat exchanger 100 through the first valve 421 for cooling to form supercooled water.

[0073] In some embodiments, the supercooled water cold storage device further includes a first gas-liquid separator 610, which is disposed on a connecting pipe between the second outlet 104 of the heat exchange pipe 120 and the inlet of the ice slurry generator 200. Thus, before entering the ice slurry generator 200, the first gas-liquid separator 610 is disposed to separate the air in the supercooled water to avoid affecting the ice storage efficiency.

[0074] Furthermore, the ice slurry generator 200 is an ultrasonic ice slurry generator. In a specific example, -2.5°C supercooled water separated from air enters the ice slurry generator 200 to generate ice slurry, and the mixture of the newly generated ice slurry and supercooled water is stored in the ice storage device 300. The mixture of ice slurry and supercooled water in the ice storage device 300 enters the bubble generator 500 again after the cold water is separated to form a cycle for further ice storage.

[0075] In some embodiments, the ice storage device 300 includes an ice storage container (i.e., the ice storage device body) and an ice-water separator 310. The ice-water separator 310 is disposed in the ice storage container to divide the ice storage container into an ice slurry area and a cold water area. The ice slurry area and the cold water area are arranged up and down, the inlet of the ice storage container is arranged in the ice slurry area, and the outlet of the ice storage container is arranged in the cold water area. The ice slurry generator 200 is connected to the ice slurry area of ​​the ice storage container, and the second inlet 103 of the anti-ice blockage heat exchanger 100 is connected to the cold water area of ​​the ice storage container.

[0076] In the ice storage container, ice slurry floats on the upper layer and cold water sinks to the bottom. The ice-water separator 310 is used to isolate the ice slurry from the cold water area, and the cold water in the ice storage container enters the bubble generator 500 through the ice-water separator.

[0077] Furthermore, the ice storage device 300 further includes an upper water distributor 320, which is disposed in the ice slurry area and communicated with the inlet of the ice storage container, so as to evenly distribute the mixture of newly generated ice slurry and supercooled water in the ice storage container through the upper water distributor 320. Furthermore, the ice storage device 300 further includes a lower water distributor 330, which is disposed in the cold water area and communicated with the outlet of the ice storage container. In a specific example, the cold water in the cold water area enters the lower water distributor 330, and the lower water distributor 330 evenly absorbs the cold water at 2.5°C into the pipeline, and sends the cold water to the bubble generator 500 through the pipeline to add micro bubbles.

[0078] In some of the embodiments, the cooling equipment includes a supercooled water cooling device and a chilled water cooling device.

[0079] The supercooled water cooling device includes a first cooling heat exchanger 710 and a second gas-liquid separator 620 .

[0080] The first cooling heat exchanger 710 is used to exchange heat with the chilled water cooling device to provide cooling capacity to the chilled water cooling device.

[0081] The supercooled water inlet of the first cooling heat exchanger 710 is connected to the outlet of the ice storage device 300. The second gas-liquid separator 620 is provided on the connecting pipeline between the supercooled water inlet of the first cooling heat exchanger 710 and the outlet of the ice storage device 300. The first cooling heat exchanger 710 is also connected to the inlet of the ice storage device 300 to circulate the supercooled water.

[0082] Furthermore, the first cooling heat exchanger 710 is a plate heat exchanger. Furthermore, a second valve 422 is provided on the connecting pipeline between the second gas-liquid separator 620 and the cold water circulation pump 411. In a specific example, after 1°C cold water is pressurized by the cold water circulation pump 411, it passes through the second valve 422, enters the second gas-liquid separator 620 to separate the gas in the cold water, enters the first cooling heat exchanger 710, and is heat-exchanged into 10°C cold water.

[0083] Furthermore, a third valve 423 is provided on the connecting pipe between the first cooling heat exchanger 710 and the inlet of the ice storage device 300. In a specific example, the 10°C cold water after heat exchange in the first cooling heat exchanger 710 is evenly distributed in the ice storage container through the water distributor via the third valve 423. The 10°C cold water exchanges heat with the ice slurry in the ice storage and cools into 1°C cold water, which passes through the ice-water separator and is sucked into the pipeline by the lower water distributor 330, and then enters the cold water circulation pump 411 for pressurization through the bubble generator 500 (without bubble operation), and then passes through the second valve 422 and the second gas-liquid separator 620 to the first cooling heat exchanger 710 for heat exchange again, completing a cooling cycle.

[0084] It is worth noting that in the above-mentioned supercooled water cooling process of the supercooled water cooling device, the automatic gas filling function of the bubble generator 500 is turned off and it only serves as a bypass pipeline. The first valve 421 is closed, and the first gas-liquid separator 610 and the ice slurry generator 200 are closed.

[0085] In some embodiments, the chilled water cooling device includes a cooling terminal 810, a water collector 820, a chilled water circulation pump 412, and a water distributor 830. The cooling terminal 810, the water collector 820, the chilled water circulation pump 412, the first cooling heat exchanger 710, and the water distributor 830 are connected end to end in sequence to form a first chilled water cycle when cooling.

[0086] Furthermore, a fourth valve 424 is provided on the connecting pipeline between the chilled water circulation pump 412 and the first cooling heat exchanger 710. Furthermore, a fifth valve 425 is provided on the connecting pipeline between the first cooling heat exchanger 710 and the water distributor 830.

[0087] In a specific example, after the 12°C chilled water is pressurized by the chilled water circulation pump 412, it passes through the fourth valve 424 and enters the first cooling heat exchanger 710 to exchange heat with the 1°C cold water from the ice storage container. After the 12°C chilled water passes through the first cooling heat exchanger 710, the temperature drops to 7°C. The 7°C chilled water passes through the fifth valve 425 and the water distributor 830 to enter the cooling terminal 810 for cooling. After the 7°C chilled water is cooled, the temperature rises to 12°C. The 12°C chilled water return water passes through the water collector 820 and enters the chilled water circulation pump 412 again for pressurization to complete a cycle.

[0088] During cooling, the supercooled water circulation process of the supercooled water in the supercooled water cooling device and the chilled water circulation process in the chilled water cooling device continue until the cold water outlet temperature in the ice storage device 300 reaches 5°C, indicating that the cooling process is completed.

[0089] In some of the embodiments, the cooling medium circulation device includes a dual-condition refrigeration host 900, and the dual-condition refrigeration host 900 has a cold storage condition and a cold supply condition.

[0090] When the dual-mode refrigeration host 900 is in the cold storage state, the dual-mode refrigeration host 900 is connected to the first inlet 101 and the first outlet 102 of the shell 110 to circulate the cooling medium in the dual-mode refrigeration host 900.

[0091] Furthermore, the cooling medium circulation equipment also includes an ethylene glycol solution circulation pump 413. When the dual-mode refrigeration main unit 900 is in the cold storage condition, both ends of the ethylene glycol solution circulation pump 413 are respectively connected to the dual-mode refrigeration main unit 900 and the first outlet 102 of the shell 110 of the anti-icing heat exchanger 100 to provide circulation power for the ethylene glycol solution therein.

[0092] Furthermore, a sixth valve 426 is provided on the connecting pipe between the glycol solution circulation pump 413 and the first outlet 102 of the shell 110 of the anti-icing heat exchanger 100. Furthermore, a seventh valve 427 is provided on the connecting pipe between the dual-mode refrigeration host 900 and the first inlet 101 of the shell 110 of the anti-icing heat exchanger 100.

[0093] In a specific example, the 1.5°C ethylene glycol solution flowing out from the first outlet 102 of the shell 110 is pressurized by the ethylene glycol solution circulation pump 413 and then enters the dual-mode refrigeration host 900 to be cooled into a -3.5°C ethylene glycol solution. The -3.5°C ethylene glycol solution passes through the seventh valve 427 and enters the anti-icing heat exchanger 100 for heat exchange, and the temperature of the -3.5°C ethylene glycol solution rises to 1.5°C. The 1.5°C ethylene glycol solution leaves the first outlet 102 of the anti-icing heat exchanger 100, passes through the sixth valve 426, and enters the ethylene glycol solution circulation pump 413 again for pressurization; completing one cycle.

[0094] When the dual-mode refrigeration host 900 is in the cooling state, the dynamic ice storage system 10 further includes a second cooling heat exchanger 720, and the dual-mode refrigeration host 900 is connected to the second cooling heat exchanger 720 to circulate the cooling medium in the dual-mode refrigeration host 900. Furthermore, the second cooling heat exchanger 720 can also be used to exchange heat with the chilled water cooling device to provide cooling capacity to the chilled water cooling device.

[0095] In some specific examples, the second cooling heat exchanger 720 is a plate heat exchanger.

[0096] Furthermore, when the dual-mode refrigeration main unit 900 is in the cooling condition, the second cooling heat exchanger 720, the ethylene glycol solution circulation pump 413 and the dual-mode refrigeration main unit 900 are connected end to end in sequence to form a cooling medium circulation loop (i.e., an ethylene glycol solution circulation loop). The two ends of the ethylene glycol solution circulation pump 413 are respectively connected to the ethylene glycol outlets of the dual-mode refrigeration main unit 900 and the second cooling heat exchanger 720 to provide power for the circulation of the ethylene glycol solution therein. At this time, the connection between the dual-mode refrigeration main unit 900 and the anti-icing heat exchanger 100 is blocked.

[0097] Furthermore, an eighth valve 428 and a ninth valve 429 are also included; the eighth valve 428 and the ninth valve 429 are sequentially arranged on the connecting pipeline between the ethylene glycol outlet of the dual-mode refrigeration host 900 and the ethylene glycol inlet of the second cooling heat exchanger 720. It can be understood that in some examples, the eighth valve 428 and the ninth valve 429 can be only one, and either one can be omitted.

[0098] In a specific example, after the 10°C ethylene glycol solution is pressurized by the ethylene glycol solution circulation pump 413, it enters the dual-mode refrigeration host 9002 to cool into a 5°C ethylene glycol solution. The 5°C ethylene glycol solution passes through the eighth valve 428 and the ninth valve 429 and enters the second cooling heat exchanger 720 for heat exchange, and the temperature of the 5°C ethylene glycol solution rises to 10°C. The 10°C ethylene glycol solution leaves the ethylene glycol outlet of the second cooling heat exchanger 720 and enters the ethylene glycol solution circulation pump 413 again for pressurization, completing a cycle.

[0099] Furthermore, one end of the eighth valve 428 is connected to the glycol outlet of the dual-mode refrigeration host 900, and the other end is connected to the connecting pipe between the sixth valve 426 and the anti-icing heat exchanger 100. One end of the ninth valve 429 is connected to the glycol inlet of the second cooling heat exchanger 720, and the other end is also connected to the connecting pipe between the sixth valve 426 and the anti-icing heat exchanger 100.

[0100] It should be noted that when the dual-mode refrigeration host 900 is in the cooling condition, the seventh valve 427 and the sixth valve 426 are closed, and the ethylene glycol solution does not pass through the anti-icing heat exchanger 100. Correspondingly, when the dual-mode refrigeration host 900 is in the cold storage condition, the eighth valve 428 and the ninth valve 429 are closed, and the ethylene glycol solution does not pass through the second cooling heat exchanger 720.

[0101] It can be understood that the valves mentioned above in the present invention can all be electric valves.

[0102] In some of the embodiments, the cooling terminal 810, the water collector 820, the chilled water circulation pump 412, the second cooling heat exchanger 720 and the water distributor 830 are connected end to end in sequence to form a second chilled water cycle when providing cooling.

[0103] Furthermore, a tenth valve 430 is provided on the connecting pipeline between the chilled water circulation pump 412 and the second cooling heat exchanger 720. In a specific example, after the 12°C chilled water is pressurized by the chilled water circulation pump 412, it passes through the tenth valve 430 and enters the second cooling heat exchanger 720 to exchange heat with the 5°C ethylene glycol solution. After the 12°C chilled water is heat exchanged by the second cooling heat exchanger 720, the temperature drops to 7°C, and the 7°C chilled water enters the cooling terminal 810 for cooling through the water distributor 830. After the 7°C chilled water is cooled, the temperature rises to 12°C. The 12°C chilled water return water passes through the water collector 820 and enters the chilled water circulation pump 412 for pressurization again, completing a cycle.

[0104] It can be understood that the first chilled water cycle and the second chilled water cycle can work simultaneously, that is, the first cooling heat exchanger 710, the second cooling heat exchanger 720 and the cooling terminal 810 can work simultaneously.

[0105] Furthermore, the cooling terminal 810 may be a fresh air unit, a fan duct, a combined air conditioner, and the like.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dynamic ice storage system, characterized in that: include: Supercooled water storage equipment, cooling medium circulation equipment and cooling equipment, the supercooled water storage equipment includes an ice slurry generator, an ice storage device and an anti-ice blockage heat exchanger; The anti-icing heat exchanger comprises: A housing having a first inlet for introducing a cooling medium and a first outlet for discharging the cooling medium; a heat exchange pipe, disposed in the shell, wherein one end of the heat exchange pipe is provided with a second inlet for introducing the liquid to be cooled, and the other end of the heat exchange pipe is provided with a second outlet for discharging the liquid to be cooled; and A de-icing assembly is arranged in the heat exchange pipe, and the de-icing assembly includes a rotating shaft, an impeller and an ice scraper; the rotating shaft is arranged along the axial direction of the heat exchange pipe; the ice scraper is connected to the rotating shaft; the impeller is assembled on the rotating shaft, and can rotate under the impetus of the cooling liquid and drive the ice scraper to rotate, so that the ice scraper acts on the inner wall of the heat exchange pipe; there are multiple ice scrapers; the multiple ice scrapers are arranged at intervals along the axial direction of the rotating shaft; The outlet of the ice storage device is communicated with the second inlet of the heat exchange pipe, the second outlet of the heat exchange pipe is communicated with the inlet of the ice slurry generator, and the outlet of the ice slurry generator is communicated with the inlet of the ice storage device; the ice storage device includes an ice storage container, an ice-water separator and an upper water distributor, the ice-water separator is arranged in the ice storage container to divide the ice storage container into an ice slurry area and a cold water area, the ice slurry generator is communicated with the ice slurry area of ​​the ice storage container, and the second inlet of the anti-ice blockage heat exchanger is communicated with the cold water area of ​​the ice storage container; the upper water distributor is arranged in the ice slurry area and communicated with the inlet of the ice storage container; The cooling medium circulation device is in communication with the first inlet and the first outlet of the housing; The cooling device is used to cool the supercooled water in the ice storage device for cooling.

2. The dynamic ice storage system according to claim 1, characterized in that: The ice scraper is a brush; and / or The ice scraper is arranged around the rotating shaft.

3. The dynamic ice storage system according to claim 1, characterized in that: The number of the impellers is at least two, and one impeller is respectively provided at both ends of the rotating shaft, and the ice scraper is arranged between the two impellers at the two ends.

4. The dynamic ice storage system according to any one of claims 1 to 3, characterized in that: The deicing assembly further comprises a bearing, and the impeller is assembled on the rotating shaft through the bearing.

5. The dynamic ice storage system according to claim 4, characterized in that: The deicing assembly also includes a fixing member and a bearing seat, the bearing is arranged in the bearing seat, and the fixing member is connected to the bearing seat and the inner wall of the heat exchange pipe respectively.

6. The dynamic ice storage system according to claim 1, characterized in that: The supercooled water cold storage device further includes a bubble generator, which is arranged on a connecting pipeline between the outlet of the ice storage device and the second inlet of the heat exchange pipeline.

7. The dynamic ice storage system according to claim 6, characterized in that: The supercooled water thermal storage device further includes a first gas-liquid separator, which is disposed on a connecting pipeline between the second outlet of the heat exchange pipeline and the inlet of the ice slurry generator.

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