Supercooled water ice making system and ice making and melting control method thereof

Abstract

The application relates to a supercooled water type ice making system and an ice making and melting control method thereof. The supercooled water type ice making system comprises a refrigerant module, a first pipeline and an ice making module. The refrigerant module comprises an evaporator, a compressor and a condensing throttling assembly. The evaporator comprises a first refrigerant inlet, a refrigerant outlet, a cold water inlet, a cold water outlet and a bypass hole interface. The inlet end of the compressor is communicated with the refrigerant outlet. The outlet end of the compressor is communicated with the inlet end of the condensing throttling assembly. The outlet end of the condensing throttling assembly is communicated with the first refrigerant inlet. The first pipeline is communicated with the gas outlet end of the compressor and the bypass hole interface. The first pipeline is provided with a first valve body. The ice making module comprises an ice storage device and a crystal removal device. The water inlet end of the ice storage device is communicated with the cold water outlet. The water outlet end of the ice storage device is communicated with the first inlet of the crystal removal device. The first outlet of the crystal removal device is communicated with the cold water inlet. The technical scheme effectively solves the technical problems of small refrigeration capacity and low refrigeration efficiency of a traditional ice making system.

Description

Technical Field

[0001] The present application relates to the field of ice making technology, and in particular to a supercooled water ice making system and an ice making and melting control method thereof. Background Art

[0002] Supercooled continuous ice making is a new ice-making method that has developed in recent years. Compared with traditional static ice-making methods, supercooled water continuous ice making has low energy loss and high ice-making efficiency. Therefore, it has been widely favored by industry practitioners at home and abroad. The principle of supercooled water dynamic ice making is as follows: water is cooled to a supercooled state in the subcooler, that is, the water in this state is below the freezing point but not frozen. When it flows through the ice slurry generator, the supercooled state of the water is eliminated and the water mixture is transformed into an ice-water mixture. Finally, a filtration device separates the water and the higher-concentration ice slurry. The separated water continues to circulate in the system, and the remaining ice is stored in the ice storage tank.

[0003] The key step in supercooled water ice-making technology is to continuously and stably transform supercooled water into fluidized ice slurry and prevent it from freezing in the cooler. Related technologies for supercooled water dynamic ice-making often use specialized plate heat exchangers as subcoolers. However, these specialized plate heat exchangers are limited by cost and size, resulting in low cooling capacity and efficiency. Summary of the Invention

[0004] The present application provides a supercooled water ice-making system and an ice-making and ice-melting control method thereof, in order to solve the technical problems of small refrigeration capacity and low refrigeration efficiency of traditional ice-making systems.

[0005] To this end, in a first aspect, an embodiment of the present application provides a supercooled water ice making system, comprising:

[0006] The refrigerant module includes an evaporator, a compressor and a condensation throttling assembly. The evaporator includes a first refrigerant inlet, a refrigerant outlet, a cold water inlet, a cold water outlet and a bypass hole interface. The inlet end of the compressor is connected to the refrigerant outlet, the outlet end of the compressor is connected to the inlet end of the condensation throttling assembly, and the outlet end of the condensation throttling assembly is connected to the first refrigerant inlet.

[0007] A first pipe member is connected to the air outlet of the compressor and the bypass hole interface, and a first valve body is provided on the first pipe member; and

[0008] The ice making module includes an ice storage device and a decrystallizer. The water inlet of the ice storage device is connected to the cold water outlet, the water outlet of the ice storage device is connected to the first inlet of the decrystallizer, and the first outlet of the decrystallizer is connected to the cold water inlet.

[0009] In a possible implementation, the evaporator further comprises a flow distributor and a plurality of first heat exchange tube bundles located below the flow distributor, the flow distributor is arranged towards the first refrigerant inlet, the first heat exchange tube bundles extend along the axial direction of the evaporator, and the plurality of first heat exchange tube bundles are arranged in a matrix.

[0010] In a possible implementation, in the vertical direction, the projection area of the flow distributor is greater than or equal to the projection area of the plurality of first heat exchange tube bundles.

[0011] In a possible implementation, the evaporator further comprises a gas equalization pipe member in communication with the bypass hole interface, the gas equalization pipe member is inserted into the plurality of first heat exchange tube bundles, and a plurality of gas outlets are arranged on the gas equalization pipe member.

[0012] In a possible implementation, the evaporator further comprises a second refrigerant inlet, the refrigerant module further comprises a second pipe member and a third pipe member, the second pipe member is in communication with the outlet end of the compressor and the second inlet of the crystallization device, the third pipe member is in communication with the second outlet of the crystallization device and the second refrigerant inlet of the evaporator, a second valve body is arranged on the second pipe member, and a third valve body is arranged on the third pipe member.

[0013] In a possible implementation, the refrigerant module further comprises a fourth pipe member, the inlet end of the fourth pipe member is in communication with the second outlet of the crystallization device, the outlet end of the fourth pipe member is in communication with the second refrigerant inlet, and a fourth valve body is arranged on the fourth pipe member.

[0014] In a possible implementation, the crystallization device comprises a shell and a first baffle plate, a second baffle plate, and a filter arranged in the shell, the first baffle plate is connected to the top inner wall of the shell and extends towards the opposite side, the second baffle plate is connected to the bottom inner wall of the shell and extends towards the opposite side, the first baffle plate and the second baffle plate are arranged in a staggered manner along the axial direction of the crystallization device to form a wave-shaped liquid flow channel in the axial direction of the shell, the filter extends along the axial direction of the crystallization device, the filter is arranged between the first baffle plate and the second baffle plate and / or the filter is arranged between the first baffle plate / second baffle plate and the side wall of the shell, and the first inlet of the crystallization device is arranged on the shell.

[0015] In a possible implementation, the crystallization device further comprises a second heat exchange tube bundle, the inlet end of the second heat exchange tube bundle is in communication with the second inlet of the crystallization device, and the outlet end of the second heat exchange tube bundle is in communication with the second outlet of the crystallization device; the second heat exchange tube bundle is arranged in a bent manner and passes through the first baffle plate and / or the second baffle plate at least once.

[0016] In a possible implementation, the ice making module further comprises a water supplementing device and a fifth pipe member, the water inlet end of the water supplementing device is in communication with the cold water outlet, the water outlet end of the water supplementing device is in communication with the first inlet of the crystallization device, and the fifth pipe member is in communication with the water supplementing device and the ice storage device, and a fifth valve body is arranged on the fifth pipe member.

[0017] In a second aspect, the present application also provides an ice making and melting control method for the supercooled water ice making system as described above, the ice making and melting control method comprising:

[0018] In the ice making mode, the refrigerant module and the ice making module of the supercooled water ice making system are controlled to work simultaneously;

[0019] The evaporation pressure and / or the evaporation temperature in the evaporator of the refrigerant module are obtained;

[0020] If the evaporation pressure and / or the evaporation temperature deviates from the preset value, the first valve body is opened to guide the refrigerant gas from the compressor back to the evaporator.

[0021] In a possible implementation, the ice making and melting control method further comprises:

[0022] In the ice melting mode, the ice storage device of the ice making module is controlled to be disconnected from the evaporator and the crystal removal device, and the water supply device of the ice making module is controlled to be connected to the evaporator and the crystal removal device;

[0023] The water temperature in the water supply device is obtained;

[0024] If the water temperature is less than the target temperature, the second valve body in the refrigerant module is opened, the third valve body in the refrigerant module is closed, and the fourth valve body in the refrigerant module is opened to heat the water in the water supply device.

[0025] According to the supercooled water ice making system and the ice making and melting control method provided by the embodiments of the present application, the specific configuration of the supercooled water ice making system is optimized to continuously and stably convert the supercooled water into the fluidized ice slurry, improve the refrigeration capacity of the ice making system, and improve the refrigeration efficiency. Specifically, the supercooled water ice making system is configured to include at least a combination of a refrigerant module, a first pipe, and an ice making module. The refrigerant module is configured to include at least a combination of an evaporator, a compressor, and a condensing and throttling assembly, which is used to absorb the heat of the cold water in the evaporator to gradually transition the cold water to a supercooled state. The first pipe is used to provide heat to the evaporator to avoid the formation of ice crystals in the evaporator to block the evaporator, and the first pipe can realize precise control of the shell side pressure of the evaporator to avoid excessively low shell side evaporation temperature and local low temperature, which affects heat exchange. The ice making module is configured to include at least a combination of an ice storage device and a crystal removal device to realize ice storage through the ice storage device and completely eliminate the ice crystals in the cold water in the strong turbulence without causing a large temperature rise through the crystal removal device, so as to ensure that the cold water in the evaporator does not contain ice crystals and ensure the continuous, efficient, and stable operation of the supercooled water ice making system. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment description or prior art description will be briefly introduced. Obviously, those skilled in the art can obtain other drawings from these drawings without any creative effort. One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding to the embodiments, and the exemplarily illustrations do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings in the drawings do not constitute a proportional limitation.

[0027] Figure 1 A structural schematic diagram of the supercooled water type ice making system provided by the embodiments of the present application is shown in the figure.

[0028] Figure 2 A structural schematic diagram of the evaporator in the supercooled water type ice making system provided by the embodiments of the present application is shown in the figure, in which the solid arrow direction is the supercooled water flow direction, and the hollow arrow direction is the refrigerant flow direction.

[0029] Figure 3 A structural schematic diagram of the supercooled water type ice making system provided by the embodiments of the present application is shown in the figure. Figure 2

[0030] Figure 4 A structural schematic diagram of the supercooled water type ice making system provided by the embodiments of the present application is shown in the figure, in which the solid arrow direction is the supercooled water flow direction, and the hollow arrow direction is the refrigerant flow direction.

[0031] Figure 5 A flow chart of the ice making and ice melting control method of the supercooled water type ice making system provided by the embodiments of the present application is shown in the figure.

[0032] Explanation of reference numerals:

[0033] 100, refrigerant module; 101, first refrigerant inlet; 102, refrigerant outlet; 103, cold water inlet; 104, cold water outlet; 105, bypass hole interface; 106, second refrigerant inlet; 110, evaporator; 111, flow distribution element; 112, first heat exchange tube bundle; 113, gas equalizing pipe element; 120, compressor; 130, condensing throttling assembly; 131, condenser; 132, throttling element; 140, second pipe element; 141, second valve body; 150, third pipe element; 151, third valve body; 160, fourth pipe element; 161, fourth valve body.

[0034] 200, first pipe element; 201, first valve body.

[0035] ​300, ice making module; 310, ice storage device; 320, crystal removal device; 3201, first inlet; 3202, first outlet; 3203, second inlet; 3204, second outlet; 321, shell; 322, first baffle; 323, second baffle; 324, filter; 325, second heat exchange tube bundle; 330, supercooling removal device; 340, water supply device; 350, fifth pipe; 351, fifth valve body. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0037] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the description of a particular example will not necessarily be repeated in the description of each example. Furthermore, the description is not intended to limit the present application to other embodiments or examples that would be apparent to one of ordinary skill in the art by enabling him to use, or adapt, the present application. In addition, the present application can use reference numerals in the various examples with identical components carrying the same reference numerals. Such repetition is for the purpose of simplicity and clarity and is not intended to indicate that the various embodiments or examples are identical or similar. Furthermore, the present application provides various specific examples of processes and materials, but one of ordinary skill in the art can appreciate the applicability of other processes and / or the use of other materials.

[0038] For the purpose of simplicity, spatial relative terms can be used in the description to describe the relative position relationship or movement condition of one element or feature with respect to another element or feature as shown in the drawings, such as "inner", "outer", "inward", "outward", "under", "below", "above", "on", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be subsequently oriented as "above" or "over" another element or feature. Therefore, the example term "below" can include both upward and downward positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the description are interpreted accordingly.

[0039] Referring to Figures 1 to 4 The embodiment of the present application provides a supercooled water type ice making system, which comprises a refrigerant module 100, a first pipe piece 200 and an ice making module 300.

[0040] The refrigerant module 100 comprises an evaporator 110, a compressor 120 and a condensing throttling assembly 130, the evaporator 110 comprises a first refrigerant inlet 101, a refrigerant outlet 102, a cold water inlet 103, a cold water outlet 104 and a bypass hole interface 105, the inlet end of the compressor 120 is communicated with the refrigerant outlet 102, the outlet end of the compressor 120 is communicated with the inlet end of the condensing throttling assembly 130, and the outlet end of the condensing throttling assembly 130 is communicated with the first refrigerant inlet 101.

[0041] The first pipe piece 200 is communicated with the gas outlet end of the compressor 120 and the bypass hole interface 105, and the first pipe piece 200 is provided with a first valve body 201.

[0042] The ice making module 300 comprises an ice storage device 310 and a crystal removal device 320, the water inlet end of the ice storage device 310 is communicated with the cold water outlet 104, the water outlet end of the ice storage device 310 is communicated with the first inlet 3201 of the crystal removal device 320, and the first outlet 3202 of the crystal removal device 320 is communicated with the cold water inlet 103.

[0043] In the embodiment, the specific configuration of the supercooled water type ice making system is optimized, so that the supercooled water is continuously and stably changed into fluidized ice slurry, the refrigerating capacity of the ice making system is improved, and the refrigeration efficiency is improved.

[0044] Specifically, the supercooled water type ice making system is configured as a combined component comprising at least the refrigerant module 100, the first pipe piece 200 and the ice making module 300, the refrigerant module 100 is configured as a combined component comprising at least the evaporator 110, the compressor 120 and the condensing throttling assembly 130, which is used to absorb the heat of the cold water in the evaporator 110, so that the cold water gradually transitions to a supercooled state; the first pipe piece 200 is used to provide heat for the evaporator 110, so as to avoid the formation of ice crystals in the evaporator 110 due to the cooling of the supercooled water, which blocks the evaporator 110, at the same time, the first pipe piece 200 can realize precise control of the shell side pressure of the evaporator 110, so as to avoid the shell side evaporation temperature being too low and local low temperature being generated, which affects heat exchange; the ice making module 300 is configured as a combined component comprising at least the ice storage device 310 and the crystal removal device 320, so as to realize ice storage through the ice storage device 310, and to completely eliminate the ice crystals in the supercooled water in the strong disturbance flow without causing a large temperature rise through the crystal removal device 320, so as to ensure that the supercooled water in the evaporator 110 does not contain ice crystals, and to ensure that the supercooled water type ice making system continuously and efficiently and stably operates.

[0045] In an example, the condensing throttling assembly 130 comprises a condenser 131 and a throttling device 132, the inlet end of the condenser 131 is communicated with the outlet end of the compressor 120, the outlet end of the condenser 131 is communicated with the inlet end of the throttling device 132, and the outlet end of the throttling device 132 is communicated with the first refrigerant inlet 101 of the evaporator 110. For example but not limited to, the throttling device 132 is a throttling valve.

[0046] In an example, the ice making module 300 further comprises a supercooling eliminating device 330, which is arranged between the evaporator 110 and the ice storage device 310, and a valve is arranged between the supercooling eliminating device 330 and the ice storage device 310, and a valve is also arranged between the ice storage device 310 and the crystal eliminating device 320, so as to control the opening and closing of the ice making path.

[0047] From the above, the refrigerant circuit and the cold water circuit exist in the evaporator 110 at the same time. Among them, the refrigerant circuit is that the low-temperature liquid refrigerant flowing out of the throttling device 132 of the condensing throttling assembly 130 enters the evaporator 110 through the first refrigerant inlet 101 of the evaporator 110, is uniformly distributed in the evaporator 110, and is formed on the pipe fittings of the cold water circuit pipe arrangement area to form a uniform liquid film outside the pipe fittings. Part of the saturated liquid refrigerant in the liquid film absorbs the heat of the cold water inside the pipe to evaporate into high-temperature low-pressure gaseous refrigerant. The gaseous refrigerant enters the compressor 120 through the refrigerant outlet 102 of the evaporator 110, and is compressed by the compressor 120 to form high-temperature high-pressure gaseous refrigerant. The high-temperature high-pressure gaseous refrigerant enters the condenser 131 of the condensing throttling assembly 130 to cool and condense, forming low-temperature high-pressure liquid refrigerant. The low-temperature high-pressure liquid refrigerant is throttled and decompressed by the throttling device 132 to form low-temperature low-pressure liquid refrigerant. The low-temperature low-pressure liquid refrigerant enters the evaporator 110 through the first refrigerant inlet 101, and so on, realizing the recycling of the refrigerant.

[0048] The cold water circuit is that the 0℃ cold water containing ice crystals enters the crystal eliminating device 320 from the ice storage device 310. Then, the cold water is heated and exchanged by the crystal eliminating device 320 to form cold water with slightly increased temperature, and the temperature is increased by about 0.1℃, which can effectively eliminate the ice crystals in the cold water to form cold water without ice crystals. Then, the cold water is evaporated and cooled by the evaporator 110 to gradually cool to a supercooled state. Finally, the supercooled state is eliminated by the supercooling eliminating device 330 to generate ice water mixture (containing ice crystals and 0℃ cold water) flowing to the ice storage device 310, wherein the ice crystals / ice particles are suspended in the upper layer, and the 0℃ cold water flows out from the bottom to enter the ice making circuit again, and so on, realizing the continuous ice making of the supercooled water, improving the refrigeration capacity and ice making capacity, and improving the refrigeration efficiency and ice making efficiency.

[0049] In an example, the first refrigerant inlet 101 and the refrigerant outlet 102 are arranged on the circumferential wall of the evaporator 110, and the first refrigerant inlet 101 and the refrigerant outlet 102 are arranged along the axial direction of the evaporator 110; the bypass hole interface 105 is arranged on the circumferential wall of the evaporator 110, and the bypass hole interface 105 is arranged along the circumferential direction of the evaporator 110; the first refrigerant inlet 101, the refrigerant outlet 102 and the bypass hole interface 105 are all connected to the internal space of the evaporator 110 to provide refrigerant for the evaporator 110. The cold water inlet 103 and the cold water outlet 104 are arranged at the two axial ends of the evaporator 110, and the cold water inlet 103 and the cold water outlet 104 are connected to the supercooled water pipeline arranged in the evaporator 110 to provide a passage for the supercooled water to flow through the evaporator 110.

[0050] In an example, the bypass hole interface 105 can be provided in plurality to improve the ventilation efficiency of the first pipeline 200. The plurality of bypass hole interfaces 105 are arranged along the axial direction of the evaporator 110.

[0051] In a possible implementation, the evaporator 110 further comprises a flow distribution member 111 and a plurality of first heat exchange tube bundles 112 arranged below the flow distribution member 111, the flow distribution member 111 is arranged towards the first refrigerant inlet 101, the first heat exchange tube bundles 112 extend along the axial direction of the evaporator 110, and the plurality of first heat exchange tube bundles 112 are arranged in a matrix. In this way, the low-temperature liquid refrigerant flowing into the evaporator 110 from the first refrigerant inlet 101 of the evaporator 110 can be uniformly distributed to the plurality of first heat exchange tube bundles 112 through the flow distribution member 111, so as to avoid local overheating of the first heat exchange tube bundles 112, improve the heat exchange efficiency, and improve the heat exchange effect.

[0052] As Figure 3 described, the plurality of first heat exchange tube bundles 112 are arranged in an array below the flow distribution member 111, and are arranged with a spacing between two columns of the first heat exchange tube bundles 112 and with a spacing between two rows of the first heat exchange tube bundles 112, so as to form a plurality of gas flow channels distributed longitudinally and transversely and connected between the plurality of first heat exchange tube bundles 112. The high-temperature gaseous refrigerant entering the evaporator 110 from the first pipeline 200 can exchange heat with the plurality of first heat exchange tube bundles 112 through the plurality of gas flow channels, so as to improve the temperature of the evaporator 110 and avoid icing of the supercooled water in the evaporator 110.

[0053] In a possible implementation, in the vertical direction, the projection area of the flow distribution member 111 is greater than or equal to the projection area of the plurality of first heat exchange tube bundles 112. In this way, the low-temperature liquid refrigerant can be uniformly distributed to each of the first heat exchange tube bundles 112 inside the evaporator 110, and a uniform liquid film can be formed outside each of the first heat exchange tube bundles 112. Part of the saturated liquid refrigerant in the liquid film absorbs heat from the cold water inside the first heat exchange tube bundle 112 and evaporates into high-temperature low-pressure gaseous refrigerant.

[0054] That is to say, the arrangement area of the flow distributor 111 in the horizontal direction is greater than the maximum area of the plurality of first heat exchange tube bundles 112 in the horizontal direction, so that the plurality of first heat exchange tube bundles 112 can be kept below the flow distributor 111 to receive the low-temperature liquid refrigerant.

[0055] In a possible implementation, the evaporator 110 further comprises a uniform-gas pipe 113 connected to the bypass-hole interface 105, the uniform-gas pipe 113 is inserted into the plurality of first heat exchange tube bundles 112, and the uniform-gas pipe 113 is provided with a plurality of gas outlets. In this way, the high-temperature refrigerant gas can be uniformly distributed to the inside of the evaporator 110 through the uniform-gas pipe 113, so as to ensure the uniformity of the pressure and temperature inside the evaporator 110.

[0056] As shown in Figure 2 and Figure 3 , the inner diameter of the uniform-gas pipe 113 is slightly smaller than the inner diameter of the bypass-hole interface 105, the uniform-gas pipe 113 is inserted into the gas flow channel between the plurality of first heat exchange tube bundles 112, and the plurality of gas outlets are simultaneously arranged in the axial direction and the circumferential direction of the uniform-gas pipe 113. In this way, the high-temperature refrigerant gas can be sent to the first heat exchange tube bundles 112 at different depths and different orientations, and heat can be provided to the first heat exchange tube bundles 112 at the different depths and different orientations.

[0057] In a possible implementation, the evaporator 110 further comprises a second refrigerant inlet 106, and the refrigerant module 100 further comprises a second pipe 140 and a third pipe 150, the second pipe 140 is connected to the outlet end of the compressor 120 and the second inlet 3203 of the crystallization-removing device 320, the third pipe 150 is connected to the second outlet 3204 of the crystallization-removing device 320 and the second refrigerant inlet 106 of the evaporator 110, the second pipe 140 is provided with a second valve body 141, and the third pipe 150 is provided with a third valve body 151. In this way, the high-temperature refrigerant gas at the outlet end of the compressor 120 can be introduced into the crystallization-removing device 320 through the second pipe 140 and the third pipe 150, so as to provide heat to the supercooled water flowing through the crystallization-removing device 320, eliminate ice crystal particles in the supercooled water flowing through the crystallization-removing device 320, and improve the ice-making efficiency of the supercooled water ice-making system. For example, but not limited to, the third valve body 151 is a throttle valve.

[0058] As shown in Figure 1As shown, the second pipe piece 140→ the crystal removal device 320→ the third pipe piece 150→ the evaporator 110→ the compressor 120→ the second pipe piece 140 form a preheating auxiliary loop, which provides heat for the crystal removal device 320 to ensure that ice crystals in the cold water flowing through the crystal removal device 320 can be completely removed. In addition, the flow of the high-temperature refrigerant gas into the crystal removal device 320 can be adjusted by adjusting the opening of the second valve body 141, so as to realize fine adjustment of the temperature in the crystal removal device 320, so as to ensure that the temperature of the entire crystal removal device 320 is not increased too much, and the maximum temperature difference is about 0.1°C.

[0059] In a possible implementation, the refrigerant module 100 further includes a fourth pipe piece 160, an inlet end of the fourth pipe piece 160 being communicated with the second outlet 3204 of the crystal removal device 320, an outlet end of the fourth pipe piece 160 being communicated with the second refrigerant inlet 106, and the fourth pipe piece 160 being provided with a fourth valve body 161. In this way, when the water temperature in the water replenishing device 340 is not high enough, the third valve body 151 is closed and the fourth valve body 161 is opened, so that the refrigerant gas flowing out of the crystal removal device 320 directly enters the evaporator 110 through the fourth valve body 161, so as to increase the shell side temperature of the evaporator 110 at the fastest speed, improve the ice melting efficiency, and shorten the ice melting time. For example but not limited to, the fourth valve body 161 is a bypass valve.

[0060] As shown in the figure, Figure 1 The fourth pipe piece 160 is connected in parallel with the third pipe piece 150, the third valve body 151 provided on the third pipe piece 150 is a throttle valve, and the fourth valve body 161 provided on the fourth pipe piece 160 is a bypass valve. In this way, in the ice making mode, the second valve body 141 is opened, the third valve body 151 is opened, and the fourth valve body 161 is closed, so that part of the high-pressure refrigerant gas discharged by the compressor 120 is provided to the evaporator 110 through the third valve body 151, which reduces the condensing load of the condenser 131 and reduces the heat exchange area of the condenser 131. At the same time, the part of the high-temperature refrigerant gas flows through the crystal removal device 320 and exchanges heat with the supercooled water flowing through the crystal removal device 320, which not only eliminates ice crystal particles in the supercooled water, but also enables the refrigerant gas after cooling to enter the evaporator 110 to participate in the refrigeration cycle again, thereby greatly improving the energy efficiency of the supercooled water type ice making system. In the ice melting mode, the second valve body 141 is opened, the fourth valve body 161 is opened, and the third valve body 151 is closed, so that part of the high-pressure refrigerant gas discharged by the compressor 120 is directly provided to the evaporator 110 through the fourth valve body 161. The part of the refrigerant gas directly enters the evaporator 110, rapidly increases the shell side temperature of the evaporator 110, improves the ice melting efficiency, and shortens the ice melting time.

[0061] Referring to Figure 4In one possible embodiment, the decrystalline device 320 includes a shell 321 and a first baffle 322, a second baffle 323 and a filter element 324 arranged in the shell 321, the first baffle 322 is connected to the top inner wall of the shell 321 and extends toward the opposite side, the second baffle 323 is connected to the bottom inner wall of the shell 321 and extends toward the opposite side, the first baffle 322 and the second baffle 323 are arranged at intervals along the axial direction of the decrystalline device 320 to form a wavy liquid flow channel in the axial direction of the shell 321; the filter element 324 extends along the axial direction of the decrystalline device 320, the filter element 324 is arranged between the first baffle 322 and the second baffle 323 and / or the filter element 324 is arranged between the first baffle 322 / the second baffle 323 and the side wall of the shell 321; the first inlet 3201 of the decrystalline device 320 is arranged on the shell 321. With this arrangement, the supercooled water can collide multiple times in the decrystallizer 320 to generate heat through the collision to melt the ice crystals in the supercooled water. The ice crystals accumulate in the decrystallizer 320 and cause the decrystallizer 320 to freeze and fail.

[0062] In this embodiment, the specific configuration of the decrystalline device 320 is optimized. Specifically, the decrystalline device 320 is configured as a composite component comprising at least a shell 321, a first baffle 322, a second baffle 323, and a filter element 324. The shell 321 is a cylindrical structure, comprising two left and right side panels and a cylindrical barrel, the two side panels being respectively arranged at the two open ends of the barrel, and the two side panels being respectively provided with a second inlet 3203 and a second outlet 3204 for the flow of refrigerant, and the first inlet 3201 and the first outlet 3202 for the flow of cold water being arranged at intervals on the same side wall of the barrel. The first baffle 322 can be provided with one or more, and the second baffle 323 can be provided with one or more. The operator can set the number of the first baffle 322 and the second baffle 323 according to the requirements for the disturbance intensity of the supercooled water in the actual operation. For example, two first baffles 322 and one second baffle 323 can be provided to divide the interior space of the shell 321 axially into four interconnected small chambers. The first inlet 3201 and the first outlet 3202 are connected to the two small chambers at the leftmost and rightmost ends, respectively, forming a shell-side flow region on the decrystallization device 320. When the supercooled water flows in this shell-side flow region, it is blocked / disturbed by the first baffle 322 and the second baffle 323 and collides with the first baffle 322 / the second baffle 323 to generate heat, thereby heating and melting the ice crystals in the supercooled water. The filter element 324 can be a filter mesh for filtering out large ice crystals in the supercooled water flowing in the shell-side flow region. At the same time, the filter element 324 can also increase the number and area of ​​collisions with the supercooled water, thereby increasing collision heat generation and improving the melting effect of the ice crystals in the supercooled water.

[0063] See alsoFigure 4 In one possible embodiment, the decrystallizer 320 further includes a second heat exchange tube bundle 325. The inlet of the second heat exchange tube bundle 325 is connected to the second inlet 3203 of the decrystallizer 320, and the outlet of the second heat exchange tube bundle 325 is connected to the second outlet 3204 of the decrystallizer 320. The second heat exchange tube bundle 325 is arranged in a curved shape and passes through the first baffle 322 and / or the second baffle 323 at least once. This arrangement effectively extends the heat exchange distance and improves the heat exchange effect.

[0064] In this embodiment, the specific configuration of the decrystallizer 320 is further optimized. Specifically, the decrystallizer 320 is configured as a composite component comprising at least a housing 321, a first baffle 322, a second baffle 323, a filter element 324, and a second heat exchange tube bundle 325. The second heat exchange tube bundle 325 is arranged in a serpentine shape within the housing 321. The inlet of the second heat exchange tube bundle 325 is connected to the second inlet 3203, and the outlet of the second heat exchange tube bundle 325 is connected to the second outlet 3204, which is located above the second inlet 3203. The refrigerant flows through the decrystallizer 320 via the second heat exchange tube bundle 325 and exchanges heat with the supercooled water within the decrystallizer 320, slightly raising the temperature of the supercooled water and melting ice crystals in the supercooled water without significantly increasing the temperature of the supercooled water.

[0065] In one possible embodiment, the ice-making module 300 further includes a water replenishment device 340 and a fifth pipe 350. The water inlet of the water replenishment device 340 is connected to the cold water outlet 104, and the water outlet of the water replenishment device 340 is connected to the first inlet 3201 of the decrystallizer 320. The fifth pipe 350 connects the water replenishment device 340 and the ice storage device 310. The fifth pipe 350 is provided with a fifth valve 351. This arrangement ensures a continuous supply of liquid water for ice making and facilitates ice melting operations.

[0066] like Figure 1 As shown, as the refrigeration cycle progresses, water gradually transforms into ice, the ice concentration in ice storage device 310 gradually increases, and the water content gradually decreases. When the ice concentration in ice storage device 310 reaches a certain level, the ice crystal content in the cold water flowing out of the outlet of ice storage device 310 increases. If this cold water enters the decrystallizer 320, it will increase the difficulty of decrystallizer 320 in removing crystals, increasing the risk of icing on evaporator 110. To address this issue, a water replenishment device 340 is installed between ice storage device 310 and evaporator 110 / decrystallizer 320. When the ice concentration in ice storage device 310 is too high, the fifth valve body 351 opens, allowing water replenishment device 340 to replenish water into ice storage device 310, reducing the ice concentration in ice storage device 310 and the ice crystal content in the cold water flowing out of the outlet of ice storage device 310, thereby maintaining the water outlet temperature of ice storage device 310 and continuing the ice-making cycle.

[0067] Further, the application also provides an ice making and melting control method, which adopts the supercooled water type ice making system as described above, and the ice making and melting control method comprises the following steps:

[0068] Step S1, in the ice making mode, the refrigerant module 100 and the ice making module 300 of the supercooled water type ice making system are controlled to work simultaneously;

[0069] Step S2, the evaporation pressure and / or the evaporation temperature in the evaporator 110 in the refrigerant module 100 are obtained;

[0070] Step S3, if the evaporation pressure and / or the evaporation temperature deviates from the preset value, the first valve body 201 is opened to guide the refrigerant gas from the compressor 120 back into the evaporator 110.

[0071] As shown in Figure 1 and Figure 5 in the ice making mode, the refrigerant module 100 and the ice making module 300 need to be controlled to work simultaneously to ensure the continuous ice making of the system; at this time, the evaporation pressure and / or the evaporation temperature in the evaporator 110 need to be monitored to avoid the ice crystals in the supercooled water from accumulating in the evaporator 110 to cause the icing failure of the evaporator 110, and when the evaporation pressure and / or the evaporation temperature in the evaporator 110 deviates from the preset value, the first valve body 201 is opened to make the high-temperature refrigerant gas from the outlet end of the compressor 120 enter the evaporator 110 through the first pipe piece 200→the first valve body 201→the bypass hole interface 105→the gas equalizing pipe piece 113, and perform heat exchange on the first heat exchange pipe piece in the evaporator 110, to increase the temperature of the supercooled water in the first heat exchange pipe piece, melt the ice crystals in the supercooled water, and avoid the ice crystals from accumulating and icing in the first heat exchange pipe piece. When the evaporation pressure and / or the evaporation temperature in the evaporator 110 is at the preset value, the first valve body 201 can be closed to avoid the high temperature in the evaporator 110 from causing the equipment failure. It can be understood that the opening of the first valve body 201 is adjustable, and in actual operation, the opening of the first valve body 201 can be adjusted according to the deviation degree of the evaporation pressure and / or the evaporation temperature to avoid the rapid rise of the temperature in the evaporator 110 and the failure of ice making.

[0072] In ice-making mode, heat can be provided to the crystallizer 320 through the preheating auxiliary circuit to ensure that the ice crystals in the cold water flowing through the crystallizer 320 can be completely removed. Specifically, it is necessary to open the second valve body 141, open the third valve body 151 at the same time, and close the fourth valve body 161. A portion of the high-pressure refrigerant gas discharged from the compressor 120 is provided to the evaporator 110 through the third valve body 151, thereby reducing the condensing load of the condenser 131 and the heat exchange area of ​​the condenser 131. At the same time, this portion of high-temperature refrigerant gas flows through the crystallizer 320 and exchanges heat with the supercooled water flowing through the crystallizer 320, thereby eliminating ice crystal particles in the supercooled water and allowing the cooled refrigerant gas to enter the evaporator 110 and re-participate in the refrigeration cycle, thereby greatly improving the energy efficiency of the supercooled water ice-making system.

[0073] In ice-making mode, liquid water is replenished to ice storage device 310 via water replenishment device 340 to reduce the ice concentration in ice storage device 310 and the ice content in the supercooled water flowing out of the outlet of ice storage device 310, thereby maintaining the water outlet temperature of ice storage device 310 and allowing the ice-making cycle to continue. Specifically, when the ice concentration in ice storage device 310 is too high, the fifth valve is opened to connect water replenishment device 340 with ice storage device 310. When the ice concentration in ice storage device 310 is normal, the fifth valve is closed to improve ice-making efficiency.

[0074] In a possible implementation, the method further includes:

[0075] Step S4: In the ice melting mode, the ice storage device 310 of the ice making module 300 is controlled to be disconnected from the evaporator 110 and the decrystallizer 320, and the water replenishing device 340 of the ice making module 300 is controlled to be connected to the evaporator 110 and the decrystallizer 320;

[0076] Step S5: obtaining the water temperature in the water replenishing device 340;

[0077] Step S6: If the water temperature is lower than the target temperature, the second valve body 141 in the refrigerant module 100 is opened, the third valve body 151 in the refrigerant module 100 is closed, and the fourth valve body 161 in the refrigerant module 100 is opened to heat the water in the water replenishing device 340.

[0078] like Figure 1As shown, in the ice melting mode, the connection between the ice storage device 310 and the evaporator 110 and the crystal removing device 320 needs to be disconnected to ensure that the ice produced in the ice storage device 310 is complete and not melted; at the same time, the water supplement device 340 is connected with the evaporator 110 and the crystal removing device 320, so that the water at a certain temperature flows through the crystal removing device 320 and the evaporator 110, and the ice crystals / ice columns / ice blocks condensed in the crystal removing device 320 and the evaporator 110 are melted. In addition, the water temperature parameter in the water supplement device 340 needs to be monitored, and when the water temperature is too low, the water needs to be heated by the preheating auxiliary circuit at this time, the second valve body 141 is opened, the fourth valve body 161 is opened, and the third valve body 151 is closed, so that part of the high-pressure refrigerant gas discharged by the compressor 120 is directly supplied to the evaporator 110 through the fourth valve body 161. The part of the refrigerant gas directly enters the crystal removing device 320 and the evaporator 110, rapidly increases the shell side temperature of the crystal removing device 320 and the evaporator 110, improves the ice melting efficiency, and shortens the ice melting time.

[0079] It should be understood that the terms used herein are for the purpose of describing particular example embodiments and are not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," and "including" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order of performance. It is also to be understood that additional or alternative steps can be employed.

[0080] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to differentiate one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless the context clearly indicates otherwise. Thus, a first element, component, region, layer or section discussed below can be termed a second element, component, region, layer or section without departing from the teachings of example embodiments.

[0081] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A supercooled water ice making system, characterized in that: include: A refrigerant module includes an evaporator, a compressor, and a condensation throttling assembly. The evaporator includes a first refrigerant inlet, a refrigerant outlet, a cold water inlet, a cold water outlet, and a bypass hole interface. The inlet end of the compressor is connected to the refrigerant outlet, the outlet end of the compressor is connected to the inlet end of the condensation throttling assembly, and the outlet end of the condensation throttling assembly is connected to the first refrigerant inlet. A first pipe member is connected to the air outlet of the compressor and the bypass hole interface, and a first valve body is provided on the first pipe member; and An ice making module comprises an ice storage device and a de-crystallization device, wherein the water inlet of the ice storage device is connected to the cold water outlet, the water outlet of the ice storage device is connected to the first inlet of the de-crystallization device, and the first outlet of the de-crystallization device is connected to the cold water inlet; The evaporator further includes a flow distribution member and a plurality of first heat exchange tube bundles located below the flow distribution member, the flow distribution member is arranged toward the first refrigerant inlet, the first heat exchange tube bundles extend along the axial direction of the evaporator, and the plurality of first heat exchange tube bundles are arranged in a matrix at intervals; The evaporator also includes a second refrigerant inlet, and the refrigerant module also includes a second pipe member and a third pipe member. The second pipe member connects the outlet end of the compressor and the second inlet of the decrystallization device, and the third pipe member connects the second outlet of the decrystallization device and the second refrigerant inlet of the evaporator. The second pipe member is provided with a second valve body, and the third pipe member is provided with a third valve body.

2. The supercooled water ice making system according to claim 1, characterized in that: In the vertical direction, the projected area of ​​the flow distribution member is greater than or equal to the projected area of ​​the first heat exchange tube bundles.

3. The supercooled water ice making system according to claim 1, characterized in that: The evaporator further includes an air-distributing pipe connected to the bypass hole interface. The air-distributing pipe is inserted into the plurality of first heat exchange tube bundles. The air-distributing pipe is provided with a plurality of air outlet holes.

4. The supercooled water ice making system according to claim 1, characterized in that: The refrigerant module further includes a fourth pipe member, an inlet end of the fourth pipe member is connected to the second outlet of the decrystallization device, an outlet end of the fourth pipe member is connected to the second refrigerant inlet, and a fourth valve body is provided on the fourth pipe member.

5. The supercooled water ice making system according to claim 1, characterized in that: The decrystalline device includes a shell and a first baffle, a second baffle and a filter element arranged in the shell, the first baffle is connected to the top inner wall of the shell and extends toward the opposite side, the second baffle is connected to the bottom inner wall of the shell and extends toward the opposite side, the first baffle and the second baffle are arranged at staggered intervals along the axial direction of the decrystalline device to form a wavy liquid flow channel in the axial direction of the shell; the filter element extends along the axial direction of the decrystalline device, the filter element is arranged between the first baffle and the second baffle and / or the filter element is arranged between the first baffle / the second baffle and the side wall of the shell; the first inlet of the decrystalline device is arranged on the shell.

6. The supercooled water ice making system according to claim 5, characterized in that: The decrystallization device also includes a second heat exchange tube bundle, the inlet end of the second heat exchange tube bundle is connected to the second inlet of the decrystallization device, and the outlet end of the second heat exchange tube bundle is connected to the second outlet of the decrystallization device; the second heat exchange tube bundle is arranged in a bent shape and passes through the first baffle and / or the second baffle at least once.

7. The supercooled water ice making system according to claim 1, characterized in that: The ice-making module also includes a water replenishing device and a fifth pipe member, the water inlet end of the water replenishing device is connected to the cold water outlet, and the water outlet end of the water replenishing device is connected to the first inlet of the decrystallization device; the fifth pipe member connects the water replenishing device and the ice storage device, and the fifth pipe member is provided with a fifth valve body.

8. A method for controlling ice making and melting, characterized in that: Using the supercooled water ice-making system according to any one of claims 1 to 7, the ice-making and ice-melting control method includes: In ice-making mode, the refrigerant module and the ice-making module of the supercooled water ice-making system are controlled to operate simultaneously; Obtaining the evaporation pressure and / or evaporation temperature in the evaporator in the refrigerant module; If the evaporation pressure and / or the evaporation temperature deviates from a preset value, the first valve body is opened to guide the refrigerant gas from the compressor back to the evaporator.

9. The ice making and melting control method according to claim 8, characterized in that: Also includes: In the ice melting mode, the ice storage device of the ice making module is controlled to be disconnected from the evaporator and the decrystallizer, and the water replenishing device of the ice making module is controlled to be connected to the evaporator and the decrystallizer; Obtaining the water temperature in the water replenishing device; If the water temperature is lower than the target temperature, the second valve in the refrigerant module is opened, the third valve in the refrigerant module is closed, and the fourth valve in the refrigerant module is opened to heat the water in the water replenishing device.

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