Supercooled water ice-making system capable of quickly melting ice and operation method of supercooled water ice-making system

Abstract

The invention relates to the field of super-cooled water ice making, in particular to a super-cooled water ice making system capable of rapidly melting ice and an operation method of the super-cooled water ice making system. The ice making system comprises a supercooled water heat exchanger, a compressor, a condenser and a throttling device. The supercooled water heat exchanger internally comprises a coaxial spiral three-medium heat exchanger which comprises a first fluid channel and a second fluid channel. The first fluid channel is a tubular channel; the second fluid channel is a spiral channel wound on the first fluid channel and is thermally coupled with the first fluid channel; the supercooled water heat exchanger, the compressor, the condenser and the throttling device are communicated through a first refrigerant loop. When supercooled water is prepared, the first fluid channel exchanges heat with a refrigerant in a shell pass of the supercooled water heat exchanger to prepare low-temperature supercooled water; in the ice melting state, exhaust of the compressor of the unit enters the second fluid channel and exchanges heat with the first fluid channel to achieve ice melting. The supercooled water ice-making system provided by the invention can realize quick ice melting, and ensures stable, efficient and continuous preparation of supercooled water.

Description

Technical Field

[0001] The present invention relates to the field of supercooled water ice making, and in particular to a supercooled water ice making system capable of quickly melting ice and an operation method thereof. Background Art

[0002] The supercooled water ice making technology has been developed and widely applied in the field of dynamic ice making. During the process of supercooled water ice making, since the temperature of supercooled water is relatively low (-3°C), ice formation and ice blockage are likely to occur in the supercooled water heat exchanger. Most of the existing supercooled water ice making systems are indirect systems using ethylene glycol as the coolant. Compared with this, the direct expansion ice making system is more energy-efficient and is the future development trend.

[0003] In the existing ice melting methods, hot water is often periodically introduced into the supercooled water channel of the supercooled water heat exchanger, or the coolant in the supercooled water heat exchanger is directly heated by an electric heater to achieve ice melting. This type of ice melting method takes a long time, has low efficiency, and is not conducive to the efficient and stable production of supercooled water.

[0004] Therefore, it is necessary to improve the structure and equipment of the existing supercooled water ice making system to solve the above problems. Summary of the Invention

[0005] The present invention provides a supercooled water ice making system capable of quickly melting ice and an operation method thereof, so as to solve the defects of the existing ice melting methods, which are time-consuming, have low efficiency, and are not conducive to the efficient and stable production of supercooled water.

[0006] The present invention provides a supercooled water ice making system capable of quickly melting ice, including: a supercooled water heat exchanger, a compressor, a condenser, and a throttling device; Wherein, the supercooled water heat exchanger includes a coaxial spiral three-medium heat exchanger, and the coaxial spiral three-medium heat exchanger includes: A first fluid channel, the first fluid channel is a tubular channel, and the first fluid channel directly contacts and exchanges heat with the refrigerant in the supercooled water heat exchanger; A second fluid channel, the second fluid channel is a spiral channel wound around the first fluid channel, and heat coupling can occur between the first fluid channel, the second fluid channel and the refrigerant in the shell side of the supercooled water heat exchanger, and the first fluid channel directly contacts and exchanges heat with the second fluid channel; The shell side of the supercooled water heat exchanger, the compressor, the condenser and the throttling device are connected through a first refrigerant loop; The medium filled in the first fluid channel is supercooled water; the second fluid channel is connected to a heat source, and a valve is provided on the loop connected to the heat source.

[0007] According to the supercooled water ice-making system capable of quickly melting ice provided by the present invention, the second fluid passage is provided with a first inlet and a first outlet, and the outlet of the compressor is sequentially communicated with the first inlet, the second fluid passage, the first outlet, and the inlet of the compressor through a second refrigerant loop; The valve is arranged in the second refrigerant loop and is located between the outlet of the compressor and the first inlet.

[0008] According to the supercooled water ice-making system capable of quickly melting ice provided by the present invention, the coaxial spiral three-medium heat exchanger is in a spiral structure and is immersed in the refrigerant of the supercooled water heat exchanger, and the supercooled water heat exchanger is a flooded evaporator.

[0009] According to the supercooled water ice-making system capable of quickly melting ice provided by the present invention, the supercooled water heat exchanger is provided with a second inlet and a second outlet, the first fluid passage is provided with a third inlet and a third outlet, the second inlet is located below the second outlet, and the third inlet is located above the third outlet.

[0010] The present invention also provides an operation method of the supercooled water ice-making system capable of quickly melting ice according to the present invention. When making supercooled water, the compressor is turned on, the valve is closed, and the low-temperature refrigerant in the supercooled water heat exchanger exchanges heat with the medium in the first fluid passage to make supercooled water.

[0011] The present invention also provides an operation method of the supercooled water ice-making system capable of quickly melting ice according to the present invention. When melting ice, the valve is turned on, and a heat source is introduced into the second fluid passage to melt the ice crystals existing in the first fluid passage.

[0012] The present invention also provides an operation method of the supercooled water ice-making system capable of quickly melting ice according to the present invention. When melting ice, the compressor and the valve are turned on, and the high-temperature exhaust gas of the compressor enters the second fluid passage to melt the ice crystals existing in the first fluid passage.

[0013] A supercooled water ice-making system capable of quickly melting ice provided by the present invention includes: a supercooled water heat exchanger, a compressor, a condenser, and a throttling device. The supercooled water heat exchanger includes a coaxial spiral three-medium heat exchanger, and the coaxial spiral three-medium heat exchanger includes: a first fluid channel and a second fluid channel. The first fluid channel is a tubular channel; the second fluid channel is a spiral channel wound around the first fluid channel, and the first fluid channel is thermally coupled with the second fluid channel; the supercooled water heat exchanger, the compressor, the condenser, and the throttling device are connected through a first refrigerant loop; the medium filled in the first fluid channel is supercooled water, and the second fluid channel is connected to a heat source. This coaxial spiral three-medium heat exchanger includes a first fluid channel and a second fluid channel; in the state of making supercooled water, the first fluid channel exchanges heat with the refrigerant in the shell side to make low-temperature supercooled water; in the ice-melting state, the exhaust gas of the compressor of the unit enters the second fluid channel to exchange heat with the first fluid channel to achieve ice melting. A supercooled water ice-making system provided by the present invention can achieve quick ice melting and ensure the stable, efficient, and continuous production of supercooled water.

[0014] Further, a running method of the supercooled water ice-making system capable of quickly melting ice according to the above-mentioned embodiment of the present invention can achieve quick ice melting and ensure the stable and efficient production of supercooled water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a supercooled water ice-making system capable of quickly melting ice provided in one embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of a supercooled water ice-making system capable of quickly melting ice provided in one embodiment of the present invention.

[0018] Figure 3 It is a schematic structural diagram of a coaxial spiral three-medium heat exchanger provided in one embodiment of the present invention.

[0019] Figure 4 It is a schematic internal structure diagram of a supercooled water heat exchanger provided in one embodiment of the present invention.

[0020] Figure 5 It is another schematic internal structure diagram of a supercooled water heat exchanger provided in one embodiment of the present invention.

[0021] Reference numerals: 1: Subcooled water heat exchanger; 11: Second inlet; 12: Second inlet; 2: Compressor; 3: Condenser; 4: Throttling device; 5: Coaxial spiral three-medium heat exchanger; 51: First fluid passage; 511: Third inlet; 512: Third outlet; 52: Second fluid passage; 521: First inlet; 522: First outlet; 6: Valve. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts fall within the scope of protection of the present invention.

[0023] In the description of this implementation mode, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this implementation mode and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this implementation mode.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this implementation mode, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In this implementation mode, unless otherwise clearly specified and limited, terms such as "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this implementation mode can be understood according to specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the 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, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0027] The following will Figures 1-5 describe a subcooled water ice-making system capable of rapid ice melting according to the present invention. The subcooled water ice-making system capable of rapid ice melting includes: a subcooled water heat exchanger 1, a compressor 2, a condenser 3, and a throttling device 4.

[0028] Wherein, the subcooled water heat exchanger 1 includes a coaxial spiral three-medium heat exchanger 5, and the coaxial spiral three-medium heat exchanger 5 includes: a first fluid passage 51 and a second fluid passage 52.

[0029] Wherein, the first fluid passage 51 is a tubular passage, and the first fluid passage 51 directly exchanges heat with the refrigerant in the subcooled water heat exchanger 1; the second fluid passage 52 is a spiral passage wound around the first fluid passage 51. Heat coupling can occur between the first fluid passage 51, the second fluid passage 52 and the refrigerant in the shell side of the subcooled water heat exchanger 1, and the first fluid passage 51 directly exchanges heat with the second fluid passage 52. Optionally, in the present invention, a heat exchange method of heat conduction and convection is adopted, that is, pairwise heat exchange or triple simultaneous heat exchange is realized through the first fluid passage 51, the second fluid passage 52 and the fluid in the shell side.

[0030] Wherein, the shell side of the subcooled water heat exchanger 1, the compressor 2, the condenser 3 and the throttling device 4 are connected through a first refrigerant loop for realizing the circulation of the refrigerant.

[0031] Wherein, the medium filled in the first fluid passage 51 is subcooled water; the second fluid passage 52 is connected to a heat source, and a valve 6 is provided on the loop connected to the heat source.

[0032] Specifically, the coaxial spiral three-medium heat exchanger 5 has the following three characteristics: 1. Coaxial structure; 2. Spiral form; 3. Three-medium heat exchange.

[0033] In the coaxial spiral three-medium heat exchanger 5, the second fluid passage 52 is wound around the first fluid passage 51 along the axial direction of the first fluid passage 51, and the second fluid passage 52 and the first fluid passage 51 are coaxially arranged.

[0034] The second fluid channel 52 is helically wound along the axial direction of the first fluid channel 51, thereby increasing the heat exchange area between the two and further improving the heat exchange effect. Moreover, the second fluid channel 52 is a spiral pipe, which can increase the turbulence degree of the fluid, thereby further improving the heat exchange efficiency.

[0035] The coaxial spiral three-medium heat exchanger 5 can realize three-medium heat exchange. The shell side of the subcooled water heat exchanger 1 is connected to the first refrigerant loop, and refrigerant can be introduced into the shell side. The first fluid channel 51 is filled with subcooled water, and the second fluid channel 52 is connected to a heat source. Preferably, the cross-sectional area of the first fluid channel 51 is circular or square, etc.

[0036] The second fluid channel 52 is wound around the outside of the first fluid channel 51, presenting an overall spiral structure. The heat source is connected to the second fluid channel 52. This heat source can be a heat source introduced from the outside or a heat source after the refrigerant is compressed by the compressor, both of which can be used for subcooled water ice melting. In the ice melting state, the heat source in the second fluid channel 52 exchanges heat with the subcooled water in the first fluid channel 51.

[0037] Specifically, in different working processes, for example, when the second fluid channel 52 is cut off, the first fluid channel 51 can directly contact and exchange heat with the refrigerant in the shell side of the subcooled water heat exchanger 1 to achieve thermal coupling; for example, when the second fluid channel 52 is connected to the heat source, direct contact heat exchange occurs between the first fluid channel 51 and the second fluid channel 52 to achieve thermal coupling.

[0038] A subcooled water ice-making system capable of quickly melting ice provided by the present invention includes: a subcooled water heat exchanger 1, a compressor 2, a condenser 3, and a throttling device 4. The subcooled water heat exchanger 1 includes a coaxial spiral three-medium heat exchanger 5, and the coaxial spiral three-medium heat exchanger 5 includes: a first fluid channel 51 and a second fluid channel 52. The first fluid channel 51 is a tubular channel, and the first fluid channel 51 directly contacts and exchanges heat with the refrigerant in the subcooled water heat exchanger 1; the second fluid channel 52 is a spiral channel wound around the first fluid channel 51, and the first fluid channel 51 is thermally coupled with the second fluid channel 52, and the first fluid channel 51 directly contacts and exchanges heat with the second fluid channel 52; the subcooled water heat exchanger 1, the compressor 2, the condenser 3, and the throttling device 4 are connected through the first refrigerant loop; the medium filled in the first fluid channel 51 is subcooled water; the second fluid channel 52 is connected to a heat source, and a valve 6 is provided on the loop connected to the heat source. The coaxial spiral three-medium heat exchanger 5 includes the first fluid channel 51 and the second fluid channel 52; in the subcooled water production state, the first fluid channel 51 exchanges heat with the refrigerant in the shell side to produce low-temperature subcooled water; in the ice melting state, the exhaust gas of the compressor of the unit enters the second fluid channel 52 to exchange heat with the first fluid channel 51 to achieve ice melting. The subcooled water ice-making system provided by the present invention can realize quick ice melting and ensure the stable, efficient, and continuous production of subcooled water.

[0039] In one embodiment of the present invention, the second fluid passage 52 is provided with a first inlet 521 and a first outlet 522. The outlet of the compressor 2 is sequentially connected to the first inlet 521, the second fluid passage 52, the first outlet 522, and the inlet of the compressor 2 through a second refrigerant loop. As Figure 2 , Figure 4 and Figure 5 shown, in this embodiment, the heat source in the second fluid passage 52 comes from the exhaust gas of the compressor. The second refrigerant loop connecting the compressor 2 and the second fluid passage serves as a hot gas bypass pipeline. Further, the outlet of the compressor 2 is connected to the first inlet 521 through the second refrigerant loop. The exhaust gas exchanges heat through the second fluid passage 52 and is then discharged from the first outlet 522 to the inlet of the compressor 2, realizing the refrigerant cycle. As Figure 4 shown, it provides a structural diagram of a subcooled water heat exchanger as a vertical heat exchanger; as Figure 5 shown, it provides a structural diagram of a subcooled water heat exchanger as a horizontal heat exchanger.

[0040] In one embodiment of the present invention, the subcooled water ice making system capable of quickly melting ice further includes: a valve 6 provided in the second refrigerant loop and located between the outlet of the compressor 2 and the first inlet 521. In this embodiment, by setting the valve 6 between the outlet of the compressor 2 and the first inlet 521 of the second fluid passage 52, the connection and disconnection of the second refrigerant loop can be controlled. After closing the valve 6, the low-temperature refrigerant in the subcooled water heat exchanger 1 exchanges heat with the medium in the first fluid passage 51, thereby producing subcooled water. After opening the valve 6 and starting the compressor 2, there are two ice melting strategies: the first is to increase the evaporation temperature of the system by reducing the frequency of the compressor 2, further increasing the refrigerant temperature in the subcooled water heat exchanger 1. At this time, the high-temperature exhaust gas of the compressor 2 enters the second fluid passage 52, and the ice crystals existing in the first fluid passage 51 can be quickly melted; the second is that the frequency of the compressor 2 remains unchanged, and its high-temperature exhaust gas enters the second fluid passage 52 to melt the ice crystals existing in the first fluid passage 51. This control method is simpler.

[0041] In one embodiment of the present invention, the coaxial spiral three-medium heat exchanger 5 has a spiral structure and is immersed in the refrigerant of the subcooled water heat exchanger 1. Specifically, the subcooled water heat exchanger 1 includes: a container body, which serves as the shell side. The first fluid passage 51 and the second fluid passage 52 of the coaxial spiral three-medium heat exchanger 5 have a spiral structure and are immersed in the refrigerant of the container body. It should be understood that for the subcooled water heat exchanger 1, its container body is the shell side, and the coaxial spiral three-medium heat exchanger 5 (i.e., the first fluid passage 51 and the second fluid passage 52) is the tube side. The fluid in the shell side exchanges heat with the fluid in the tube side by contacting the tube side.

[0042] In one embodiment of the present invention, the subcooled water heat exchanger 1 is a flooded evaporator; its design feature is that the refrigerant is completely filled inside the evaporator, that is, the refrigerant liquid occupies most of the entire heat exchange tube or heat exchange surface (i.e., fills its shell side), so as to achieve efficient heat exchange. Optionally, the form of the flooded evaporator can be a horizontal or vertical cylindrical container, which serves as the shell side of the subcooled water heat exchanger 1. It can be understood that, according to the actual situation, other forms of heat exchangers or evaporators can also be used.

[0043] In one embodiment of the present invention, the subcooled water heat exchanger 1 is provided with a second inlet 11 and a second outlet 12, the first fluid passage 51 is provided with a third inlet 511 and a third outlet 512, the second inlet 11 is located below the second outlet 12, and the third inlet 511 is located above the third outlet 512. Specifically, the second inlet 11 is located at the bottom of the container body, and the refrigerant is introduced from the bottom of the container body, and the second outlet 12 is located at the top of the container body, so that the refrigerant is discharged from the top of the container body; the third inlet 511 is located above the third outlet 512. Since the second fluid passage 52 is spirally wound around the outside of the first fluid passage 51, its first inlet 521 is also located above the first outlet 522. Through the above arrangement, the flow direction of the medium in the shell side is from bottom to top, and the flow directions of the media in the first fluid passage 51 and the second fluid passage 52 are from top to bottom, realizing countercurrent heat exchange and efficiently producing subcooled water.

[0044] In one embodiment of the present invention, the first fluid passage 51 exchanges heat directly with the second fluid passage 52. In the ice melting state, the fluid inside the first fluid passage 51 and the fluid inside the second fluid passage 52 exchange heat.

[0045] In one embodiment of the present invention, the first fluid passage 51 exchanges heat directly with the refrigerant in the subcooled water heat exchanger 1. When producing subcooled water, the fluid inside the first fluid passage 51 exchanges heat with the fluid inside the shell side of the subcooled water heat exchanger 1.

[0046] The present invention also provides an operating method for a subcooled water ice making system capable of quickly melting ice according to the above embodiments of the present invention. The operating method includes: When producing subcooled water, the compressor 2 is turned on, and the low-temperature refrigerant in the subcooled water heat exchanger 1 exchanges heat with the medium in the first fluid passage 51 to produce subcooled water. In the structure as shown in Figure 2 , when producing subcooled water, the valve 6 needs to be closed.

[0047] The operating method for a subcooled water ice making system capable of quickly melting ice according to the above embodiments of the present invention provided by the present invention can achieve quick ice melting and ensure the stable and efficient production of subcooled water.

[0048] The present invention also provides an operation method for a supercooled water ice-making system capable of rapid ice melting according to the above embodiments of the present invention. The operation method includes: when melting ice, valve 6 is opened, and a heat source is introduced into the second fluid passage 52 to melt the ice crystals existing in the first fluid passage 51.

[0049] The present invention also provides an operation method for a supercooled water ice-making system capable of rapid ice melting according to the above embodiments of the present invention. The second fluid passage 52 is provided with a first inlet 521 and a first outlet 522. The outlet of the compressor 2 is sequentially connected to the first inlet 521, the second fluid passage 52, the first outlet 522, and the inlet of the compressor 2 through a second refrigerant loop. The second refrigerant loop is provided with valve 6. In the above structure, that is, in Figure 2 In the structure, when melting ice, the compressor 2 is turned on, the frequency of the compressor 2 is reduced to increase the evaporation temperature of the system, the refrigerant temperature in the supercooled water heat exchanger 1 is increased, valve 6 is opened, and the high-temperature exhaust gas of the compressor 2 enters the second fluid passage 52 to melt the ice crystals existing in the first fluid passage 51; alternatively, the frequency of the compressor 2 is kept unchanged, and its high-temperature exhaust gas enters the second fluid passage 52 to melt the ice crystals existing in the first fluid passage 51. Further, the first refrigerant loop and the second refrigerant loop can be made of materials such as copper, stainless steel, or other alloys, and their pressure resistance, sealing performance, and suitable temperature changes should be considered.

[0050] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ice-making system using supercooled water that can quickly melt ice, characterized in that, Comprising: Subcooled water heat exchanger (1), compressor (2), condenser (3), throttling device (4); Wherein, the subcooled water heat exchanger (1) includes a coaxial spiral three-medium heat exchanger (5), and the coaxial spiral three-medium heat exchanger (5) includes: A first fluid passage (51), the first fluid passage (51) being a tubular passage, and the first fluid passage (51) directly contacting and exchanging heat with the refrigerant in the subcooled water heat exchanger (1); A second fluid passage (52), the second fluid passage (52) being a spiral passage wound around the first fluid passage (51), and heat coupling being achievable between the first fluid passage (51), the second fluid passage (52) and the refrigerant in the shell side of the subcooled water heat exchanger (1), and the first fluid passage (51) directly contacting and exchanging heat with the second fluid passage (52); The shell side of the subcooled water heat exchanger (1), the compressor (2), the condenser (3) and the throttling device (4) are connected through a first refrigerant loop; The medium filled in the first fluid passage (51) is subcooled water; the second fluid passage (52) is connected to a heat source, and a valve (6) is provided on the loop connected to the heat source.

2. The supercooled water ice-making system capable of quickly melting ice according to claim 1, characterized in that, The second fluid passage (52) is provided with a first inlet (521) and a first outlet (522), and the outlet of the compressor (2) is sequentially connected to the first inlet (521), the second fluid passage (52), the first outlet (522), and the inlet of the compressor (2) through a second refrigerant loop; The valve is provided on the second refrigerant loop and is located between the outlet of the compressor (2) and the first inlet (521).

3. The supercooled water ice-making system capable of quickly melting ice according to claim 1 or 2, characterized in that, The coaxial spiral three-medium heat exchanger (5) is in a spiral structure and is immersed in the refrigerant of the subcooled water heat exchanger (1), and the subcooled water heat exchanger (1) is a flooded evaporator.

4. The supercooled water ice-making system capable of quickly melting ice according to claim 3, characterized in that, The subcooled water heat exchanger (1) is provided with a second inlet (11) and a second outlet (12), the first fluid passage (51) is provided with a third inlet (511) and a third outlet (512), the second inlet (11) is located below the second outlet (12), and the third inlet (511) is located above the third outlet (512).

5. A method for operating a supercooled water ice-making system capable of rapidly melting ice according to any one of claims 1 to 4, characterized in that, When producing subcooled water, the compressor (2) is turned on, the valve (6) is closed, and the low-temperature refrigerant in the subcooled water heat exchanger (1) exchanges heat with the medium in the first fluid passage (51) to produce subcooled water.

6. A method for operating a supercooled water ice-making system capable of quickly melting ice according to claim 1, characterized in that, When melting ice, the valve (6) is turned on, the second fluid passage (52) is introduced with a heat source to melt the ice crystals existing in the first fluid passage (51).

7. A method for operating a supercooled water ice-making system capable of quickly melting ice according to any one of claims 2 to 4, characterized in that, When melting ice, the compressor (2) and the valve (6) are turned on, and the high-temperature exhaust gas of the compressor (2) enters the second fluid passage (52) to melt the ice crystals existing in the first fluid passage (51).

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