Ice maker capable of pre-refrigerating during water adding and changing

Abstract

The invention relates to the technical field of ice makers, and discloses a pre-cooling ice maker during water adding and changing, which comprises a pre-cooling assembly, the pre-cooling assembly is composed of a cold water tank, a pre-cooling tank and an ice filtering plate, the cold water tank and the pre-cooling tank are arranged below the ice filtering plate, the ice filtering plate is downwards inclined, and the pre-cooling tank is arranged below the ice filtering plate. The cold water tank is arranged on the high side close to the horizontal position of the ice filtering plate, a cold water pump is arranged on the outer side of the cold water tank, a pre-cooling tank water outlet is formed in the side, making contact with the cold water tank, of the bottom of the pre-cooling tank, and a condensation pipe penetrates through the middle of the side face of the pre-cooling tank. Cold water ports and warm water ports are horizontally arrayed in the ice filtering plate and correspond to the cold water tank and the pre-cooling tank in position, a closing assembly is arranged between every two adjacent cold water ports, when water flowing on the ice filtering plate is lower than 5 DEG C, the closing assemblies can be opened to enable flowing water to flow into the cold water tank from the cold water ports, and otherwise, the closing assemblies are closed to enable the flowing water to flow into the pre-cooling tank from the cold water ports. And flowing water flows into the pre-cooling box from the warm water port.

Description

Technical Field

[0001] The invention relates to the technical field of ice making machines, in particular to an ice making machine which pre-cools when adding or replacing water. Background Art

[0002] Ice making machine is a kind of efficient and multifunctional mechanical equipment. It uses advanced refrigeration technology to cool water or other liquids and freeze them into ice. This equipment is usually composed of key components such as compressor, condenser, evaporator and drain pipe. Through the principle of mechanical compression refrigeration, the refrigerant is circulated in the system, so as to achieve a low temperature environment in the evaporator, so that the water is gradually cooled and condensed into ice. There are many types of ice making machines, such as granular ice machine, flake ice machine, plate ice machine, etc. Each type can produce ice cubes of different shapes and sizes to meet the needs of different fields. In the food industry, ice making machines are often used for beverage preparation and food preservation; in the pharmaceutical industry, it can be used for low-temperature storage of drugs and biological samples; at the same time, in fisheries and cold chain transportation, ice making machines also play an important role to ensure the freshness and quality of perishable items such as seafood and aquatic products. When purchasing an ice making machine, it is necessary to consider factors such as ice production volume, ice shape and size, energy consumption, brand and after-sales service to ensure that the performance and effect of the equipment meet actual needs. In short, ice making machines, with their high efficiency and convenience, play an irreplaceable role in many fields.

[0003] During the ice-making process of the ice-making machine, water needs to be added inside, and the added water is generally room temperature water, so that the subsequent added water will cause the original temperature of the evaporator to rise when flowing through the evaporator during the ice-making process. Some ice-making machines add the added water when the evaporator is defrosted, but in the defrosting process, the temperature of the refrigerant flowing in the condenser is high, causing the temperature of the evaporator to rise. After contacting the later added water, the temperature of the water may rise, and then flow into the circulating water tank of the ice-making machine. At this time, the water in the water tank may be close to the condensation temperature, causing the temperature of the water in the water tank to rise. In the subsequent ice-making, the ice-making efficiency is reduced, and the temperature of the evaporator may be high when the defrosting is just completed. When making ice again, the water flowing through the evaporator will also cause its own temperature to rise, and flowing into the water tank will cause the temperature of the water in the water tank to rise. There is no device to divert warm water and cold water. Summary of the invention

[0004] (I) Technical problems solved: In view of the shortcomings of the prior art, the present invention provides an ice-making machine that pre-cools when adding or changing water, which has the advantages of diverting warm water and cold water and pre-cooling warm water, thereby solving the problem that normal temperature water affects the low temperature water inside the ice-making machine when adding water later.

[0005] (II) Technical solution: In order to achieve the above-mentioned purpose of diverting warm water and cold water and precooling warm water, the present invention provides the following technical solution: an ice maker that precools when adding or changing water, comprising a precooling assembly, the precooling assembly consisting of a cold water tank, a precooling box and an ice filter plate, and the ice filter plate is arranged below the evaporator in the ice maker, the cold water tank and the precooling box are arranged below the ice filter plate, the ice filter plate is arranged to be tilted downward so that ice cubes falling off the evaporator can roll along the ice filter plate into the ice storage basket in the ice maker, the cold water tank is arranged on the side close to the higher horizontal position of the ice filter plate, and a cold water pump is arranged on the outside, and the precooling box is arranged close to the ice filter plate On the lower side of the horizontal position, a pre-cooling box water outlet is provided on the side where the bottom of the pre-cooling box contacts the cold water tank, a condenser is provided in the middle of the side of the pre-cooling box, the condenser is connected to the condenser in the evaporator, and a cold water inlet and a warm water inlet are arranged in a horizontal array on the ice filter plate, the positions of the cold water inlet and the warm water inlet correspond to the cold water tank and the pre-cooling box respectively, and a closing component is provided between adjacent cold water inlets, and the closing component can be opened when the water flowing through the ice filter plate is lower than 5 degrees Celsius, so that the flowing water flows from the cold water inlet into the cold water tank, and when the water flowing through the ice filter plate is higher than 5 degrees Celsius, the closing component is closed, so that the flowing water flows from the warm water inlet into the pre-cooling box.

[0006] Preferably, the bottom level of the precooling box is higher than the bottom level of the cold water tank, so that the cold water in the precooling box can flow better into the cold water tank.

[0007] Preferably, a precooling box water pump is provided on the side of the precooling box at the same level as the condenser.

[0008] Preferably, the closing component is an elastic airbag filled with gas. When the water flowing through the ice filter plate is higher than 5 degrees Celsius, the closing component expands and squeezes each other to prevent high-temperature water from flowing into the cold water tank.

[0009] Preferably, the width of the cold water inlet is narrower than the width of the warm water inlet, so that the closing component can more easily cover the cold water inlet.

[0010] Preferably, a temperature conducting cavity is provided on the outside of the condensing tube in the precooling box, the temperature conducting cavity is tubular, and a volatile liquid is provided in the temperature conducting cavity.

[0011] Preferably, the condenser is eccentrically arranged in the temperature conducting cavity, and the condenser is closer to the lower end of the temperature conducting cavity.

[0012] Preferably, baffles are provided on both sides of the ice filter plate to prevent water flow and ice cubes from sliding off the sides of the ice filter plate.

[0013] Preferably, a protrusion is provided at the rear end of the ice filter plate, and a transverse notch is provided on the inner side of the protrusion.

[0014] (III) Beneficial effects: Compared with the prior art, the present invention provides an ice-making machine that pre-cools when adding or changing water, which has the following beneficial effects: 1. The ice-making machine that pre-cools when adding or changing water is connected to the condenser in the evaporator of the ice-making machine through the arrangement of the condenser in the pre-cooling box, so that during the ice-making process, the low-temperature refrigerant can flow through the pre-cooling box to help pre-cool the high-temperature water therein. In this way, not only the ice-making efficiency is improved, but also the energy consumption is reduced, because the pre-cooled water is more likely to condense into ice in the evaporator. The cold water inlet and the warm water inlet arranged on the ice filter plate, as well as the matching closing components, constitute an intelligent water flow diversion system. This system can automatically select the water flow path according to the water temperature, ensuring that the low-temperature water is collected in the cold water tank, while the high-temperature water flows into the pre-cooling box for further cooling. This design not only ensures the quality of the cold water in the cold water tank, but also improves the degree of automation of the entire ice-making process. In the hot defrosting state, high-temperature refrigerant flows in the condenser tube. Since the cold water in the precooling box has a larger density and is usually located in the lower layer, the high-temperature refrigerant mainly heats the water in the upper layer, avoiding direct heating of the cold water at the bottom, thereby reducing energy waste and unnecessary heat loss. The precooling box water outlet design at the bottom of the precooling box allows the precooled water to be automatically replenished to the cold water tank when there is less water in the cold water tank, ensuring a continuous supply of cold water during the ice-making process. At the same time, the setting of the precooling box water pump can extract the water that has heated up due to contact with the condenser tube for defrosting the evaporator, thereby maximizing the utilization of water resources. The low-temperature refrigerant in the ice-making machine flows from the condenser tube in the evaporator to the condenser tube in the precooling box, so that the refrigerant exchanges heat before the evaporator and then exchanges heat with the water in the precooling box, thereby performing a secondary use of the refrigerant and avoiding partial condensation of the water in the precooling box due to excessively rapid cooling, which causes energy loss.

[0015] 2. The pre-cooling ice maker for adding or changing water uses an elastic airbag as a closing component and utilizes the principle of thermal expansion and contraction to achieve automatic diversion based on water flow temperature. This design does not require external power or sensors, reduces the complexity and cost of the system, and improves the degree of automation of the system. By accurately controlling the diversion of cold water and high-temperature water, it ensures that cold water of suitable temperature is always stored in the cold water tank, while high-temperature water enters the pre-cooling tank for further cooling. This precise diversion mechanism helps to improve the ice-making efficiency and quality of the ice maker. The elastic airbag, as a closing component, has a certain buffering and adjustment ability. When the water flow temperature fluctuates slightly, the airbag can automatically adjust its volume to maintain the cold water inlet and The unobstructed or blocked state of the warm water outlet enhances the stability and reliability of the entire system. Since the closing component adopts a simple principle of thermal expansion and contraction, no complex mechanical structure or electronic components are required, so the failure rate is low, reducing downtime and maintenance costs caused by equipment failure. Since the closing component adopts a simple principle of thermal expansion and contraction, no complex mechanical structure or electronic components are required, so the maintenance cost is low. At the same time, the replacement and maintenance of the airbag are also relatively simple, reducing the difficulty and cost of maintenance. The entire system does not require complicated operating steps or external control equipment. You only need to pour water into the water tank and start the ice maker. This simplified operation method allows ordinary employees to easily operate the ice maker, improving work efficiency.

[0016] 3. Pre-cool the ice maker when adding or changing water. During the ice making process, the low-temperature refrigerant can quickly liquefy the volatile liquid in the temperature conduction cavity, and effectively pre-cool the water in the pre-cooling box through the efficient solid-liquid-solid heat transfer path, thereby improving the refrigeration efficiency. During the de-icing process, the high-temperature refrigerant vaporizes the volatile liquid and turns it into gas, and through the inefficient solid-gas-solid heat transfer path, it avoids the rapid temperature rise caused by direct contact between the high-temperature refrigerant and the water, thereby reducing the unnecessary rise in the water temperature in the pre-cooling box. The eccentric setting of the condenser in the temperature conduction cavity not only optimizes the volatile liquid, but also reduces the temperature rise of the water in the pre-cooling box. The contact area between the volatile liquid and the condenser and the wall of the temperature conduction cavity further affects the heat transfer efficiency by adjusting the spatial distribution (small space below and large space above). The eccentric setting makes the distance between the condenser and the volatile liquid shorter during cooling, and the thermal conductivity is higher. During defrosting, the heat transfer efficiency is reduced by increasing the heat transfer distance, thereby achieving refined control of thermal management. By adjusting the vaporization and liquefaction process of the volatile liquid, the system can achieve different heat transfer efficiencies in the two states of ice making and defrosting, thereby enhancing the stability and reliability of the entire ice making system.

[0017] 4. The pre-cooling ice maker when adding or changing water effectively prevents the flowing water and ice cubes from falling from both sides during the filtering process through the baffles set on both sides of the ice filter plate, ensuring that the ice cubes and water flow can flow according to the designed path, avoiding the damage or scattering of ice cubes during the transmission process, thereby improving the quality of the ice cubes finally collected. The protrusion at the tail end of the ice filter plate and the transverse groove design on its inner side cleverly intercept the water flow that does not flow out from the cold water inlet and the warm water inlet, preventing these water flows from directly entering the ice storage basket. This design avoids the problem of ice cubes sticking together after mixing with water, further improving the quality and separation effect of ice cubes. Through fine water flow and ice cube management, this structure ensures that the water flow and ice cubes can flow and separate in an orderly and efficient manner during the ice making process, reducing system failures or downtime caused by improper water flow or ice cube adhesion, thereby enhancing the stability and reliability of the entire ice making system. High-quality ice cubes and a stable ice making system provide users with a better use experience. The adhesion between ice cubes is reduced, making it easier to separate and remove ice cubes, making it more convenient and quicker for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a detailed schematic diagram of the closing component in the present invention.

[0020] Figure 3 It is a detailed schematic diagram of the condenser in the present invention.

[0021] Figure 4 Schematic diagram of water flow on the ice filter plate in the present invention Figure 1 .

[0022] Figure 5 Schematic diagram of water flow on the ice filter plate in the present invention Figure 2 .

[0023] Figure 6 It is a schematic diagram of the structure of the temperature conducting cavity in the present invention.

[0024] In the figure: 1, precooling assembly; 11, cold water tank; 12, precooling box; 13, ice filter plate; 111, cold water pump; 121, condenser; 122, precooling box water pump; 123, precooling box water outlet; 131, cold water inlet; 132, warm water inlet; 133, baffle; 1211, temperature conduction chamber; 1311, closing assembly; 1321, protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 3 The ice maker is precooled when adding or changing water, and includes a precooling component 1. The precooling component 1 is composed of a cold water tank 11, a precooling box 12 and an ice filter plate 13, and the ice filter plate 13 is arranged below the evaporator in the ice maker. The cold water tank 11 and the precooling box 12 are arranged below the ice filter plate 13. The ice filter plate 13 is arranged to be tilted downward so that ice cubes that fall off the evaporator can roll along the ice filter plate 13 to the ice storage basket in the ice maker. The cold water tank 11 is arranged on the side with a higher horizontal position close to the ice filter plate 13, and a cold water pump 111 is arranged on the outside. The precooling box 12 is arranged on the side with a lower horizontal position close to the ice filter plate 13. A precooling box water outlet 123 is arranged on the side of the bottom of the precooling box 12 that contacts the cold water tank 11. A condenser pipe 121 is arranged in the middle of the side of the precooling box 12 to pass through. The condenser pipe 121 is connected to the The condensing pipe in the evaporator is connected, and a cold water inlet 131 and a warm water inlet 132 are arranged in a horizontal array on the ice filter plate 13. The positions of the cold water inlet 131 and the warm water inlet 132 correspond to the cold water tank 11 and the pre-cooling tank 12 respectively. A closing component 1311 is provided between adjacent cold water inlets 131. When the water flowing through the ice filter plate 13 is lower than 5 degrees Celsius, the closing component 1311 can be opened to allow the flowing water to flow from the cold water inlet 131 into the cold water tank 11. When the water flowing through the ice filter plate 13 is higher than 5 degrees Celsius, the closing component 1311 is closed to allow the flowing water to flow from the warm water inlet 132 into the pre-cooling tank 12. The horizontal height of the bottom of the pre-cooling tank 12 is higher than the horizontal height of the bottom of the cold water tank 11. A pre-cooling tank water pump 122 is provided on the side of the pre-cooling tank 12 at the same horizontal height as the condensing pipe 121.

[0027] The precooling assembly 1 is arranged below the evaporator in the ice maker. The condenser pipe 121 in the precooling assembly 1 is connected to the condenser pipe in the evaporator of the ice maker. When the ice maker is in the refrigeration state, the condenser pipe 121 flows with low-temperature refrigerant, so that the evaporator in the ice maker is cooled down. Through the circulation of water in the evaporator, the water is continuously cooled down and condensed into ice on the evaporator. The uncondensed water on the evaporator will pass through the ice filter plate 13. When the water close to the condensation point flows to the ice filter plate 13, the closing assembly 1311 will open, so that the cold water can flow from the closing assembly 13 The cold water inlet 131 beside 11 flows into the cold water tank 11, and the water newly added to the ice maker or the water used for de-icing has a high temperature. When it flows to the ice filter plate 13, the closing component 1311 is closed, so that the high-temperature water cannot pass through the cold water inlet 131, and can only flow downward along the slope set on the ice filter plate 13, pass through the warm water inlet 132 at the lower end, and flow into the pre-cooling box 12. The pre-cooling box 12 is provided with a condenser 121, and the condenser 121 passes horizontally through the middle of the pre-cooling box 12. When the ice maker is in the ice-making state, the low-temperature water in the condenser 121 flows. The warm refrigerant can help cool the high-temperature water in the precooling box 12 and reduce the temperature. When the water in the cold water tank 11 is less, the precooling water is discharged into the cold water tank 11 through the precooling box water outlet 123 at the bottom of the precooling box 12 to ensure that there is sufficient cold water in the cold water tank 11. At the same time, when the ice maker is in the heating and de-icing state, the high-temperature refrigerant flows in the condenser 121. Because the condenser 121 is located in the middle of the precooling box 12, the density of cold water is greater than that of warm water, so the cold water is generally in the lower layer of the precooling box 12, avoiding the refrigerant on the bottom of the precooling box 12 The cold water is heated. At the same time, a precooling box water pump 122 is provided at the level of the condenser 121 on the side of the precooling box 12. The water that is heated due to contact with the condenser 121 can be pumped out for defrosting the ice maker evaporator. At the same time, the low-temperature refrigerant in the ice maker flows from the condenser in the evaporator to the condenser in the precooling box 12, so that the refrigerant exchanges heat with the evaporator first and then exchanges heat with the water in the precooling box 12, thereby performing a secondary utilization of the refrigerant and avoiding partial condensation due to excessively rapid cooling of the water in the precooling box 12, which causes energy loss.

[0028] See also Figure 1 , Figure 2 and Figure 4The closing component 1311 is an elastic airbag filled with gas. By using the principle of thermal expansion and contraction, when the water flowing through the ice filter plate 13 is higher than 5 degrees Celsius, the closing component 1311 expands and squeezes each other, so that the closing component 1311 blocks the cold water port 131, so that high-temperature water cannot flow into the cold water port 131. When the flowing water is lower than 5 degrees Celsius, the closing component 1311 contracts when it is cold, so that the cold water port 131 is exposed, so that cold water can flow into the cold water tank 11. The width of the cold water port 131 is narrower than that of the warm water port 132, because the expansion of the gas is a linear process. The process, and the temperature difference between the water temperature at room temperature and the condensation point is only 20 degrees Celsius, and the volume difference caused is not too large. Therefore, in order to avoid the inflow of high-temperature water, the width of the cold water inlet 131 needs to be set smaller. The gas filled in the closing component 1311 is nitrogen. Nitrogen has good chemical stability and thermal stability, and is not easy to decompose or deteriorate during long-term use. The thermal expansion coefficient of nitrogen should be moderate to ensure that sufficient volume changes can be generated within a smaller temperature change range, thereby accurately controlling the diversion of cold water and high-temperature water. Nitrogen is non-toxic, harmless, non-flammable and non-explosive to ensure safety during use.

[0029] See also Figure 6, a temperature conducting cavity 1211 is provided on the outer side of the condenser 121 in the precooling box 12, the temperature conducting cavity 1211 is tubular, and a volatile liquid is provided in the temperature conducting cavity 1211, the condenser 121 is eccentrically arranged in the temperature conducting cavity 1211, and the condenser 121 is closer to the lower end of the temperature conducting cavity 1211. When the ice maker defrosts, high-temperature refrigerant flows in the condenser 121, which can vaporize the volatile liquid in the temperature conducting cavity 1211 and turn it into gas, so that the heat transfer path between the refrigerant and the water in the precooling box 12 becomes solid-gas-solid, which reduces the heat transfer efficiency and avoids the water in the precooling box 12 from heating up too fast due to the flow of high-temperature refrigerant during defrosting. At the same time, when the ice maker makes ice, the low-temperature refrigerant can quickly liquefy the gas in the temperature conducting cavity 1211, so that the heat transfer path becomes solid-liquid-solid, which has higher heat transfer efficiency than solid-gas-solid, and is convenient for the water in the precooling box 12 Precooling, the condenser 121 is eccentrically arranged in the temperature conducting chamber 1211, and the space below the condenser 121 is small and the space above is large. In the ice making state, because the temperature conducting chamber 1211 needs to be frequently vaporized and liquefied, the amount of volatile liquid filled cannot be too much. The eccentric arrangement enables the volatile liquid to effectively increase the contact area between the condenser 121 and the tube wall of the temperature conducting chamber 1211. At the same time, the distance is shorter, the heat conduction efficiency is higher during refrigeration, and the temperature of the water in the precooling box 12 is better reduced. When the ice maker defrosts, the volatile liquid vaporizes. Affected by the temperature, the high-temperature gas will be concentrated on the upper part of the temperature conducting chamber 1211. The eccentric arrangement effectively increases the heat transfer distance between the condenser 121 and the temperature conducting chamber 1211, reduces the heat transfer efficiency, and avoids the water temperature in the precooling box 12 from rising too much. The volatile liquid uses Freon, which is a common refrigerant with good volatility and liquefaction, and is suitable for working at low temperatures.

[0030] See also Figure 5 Baffles 133 are provided on both sides of the ice filter plate 13 to prevent running water and ice cubes from falling to other places from both sides of the ice filter plate 13. A protrusion 1321 is provided at the rear end of the ice filter plate 13. The ice filter plate 13 is provided with a transverse notch on the inner side of the protrusion 1321, so that the water flow that does not flow out from the cold water inlet 131 and the warm water inlet 132 is intercepted by the protrusion 1321 and flows into the pre-cooling box 12 from the notch, thereby preventing water from flowing into the ice storage basket, resulting in adhesion between the ice cubes after the ice cubes are mixed with water, thereby affecting the quality of the ice cubes.

[0031] Working principle: The precooling component 1 is arranged below the evaporator in the ice maker, and the condensing pipe 121 in the precooling component 1 is connected with the condensing pipe in the evaporator of the ice maker. When the ice maker is in the refrigeration state, the low-temperature refrigerant flows in the condensing pipe 121, so that the temperature of the evaporator in the ice maker is reduced, and the water circulates in the evaporator so that the water is continuously cooled and condensed into ice on the evaporator. The uncondensed water on the evaporator will pass through the ice filter plate 13. When the water close to the condensation point flows to the ice filter plate 13, the closing component 1311 will open, so that the cold water can flow into the cold water tank 11 from the cold water port 131 next to the closing component 1311. The water newly added to the ice maker or the water used for de-icing has a higher temperature. When it flows to the ice filter plate 13, the closing component 1311 is closed, so that the high-temperature water cannot pass through the cold water port 131, and can only flow downward along the slope set on the ice filter plate 13, pass through the warm water port 132 at the lower end, and flow into the precooling box 12. A condenser 121 is provided in 12, and the condenser 121 passes horizontally through the middle of the precooling box 12. When the ice maker is in the ice-making state, a low-temperature refrigerant flows in the condenser 121, which can help cool the high-temperature water in the precooling box 12 and reduce the temperature. When the water in the cold water tank 11 is less, the precooled water is discharged into the cold water tank 11 through the precooling box water outlet 123 at the bottom of the precooling box 12 to ensure that there is sufficient cold water in the cold water tank 11. At the same time, when the ice maker is in the heating and defrosting state, the high-temperature refrigerant flows in the condenser 121. Because the condenser 121 is located in the middle of the precooling box 12, the density of cold water is greater than that of warm water, so the cold water is generally in the lower layer of the precooling box 12, which avoids the refrigerant heating the cold water at the bottom of the precooling box 12. At the same time, a precooling box water pump 122 is provided at the horizontal height of the condenser 121 on the side of the precooling box 12, which can pump out the water that contacts the condenser 121 and causes the temperature to rise, and is used for the ice maker evaporator to defrost.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ice maker for precooling when adding or changing water, comprising a precooling assembly (1), the precooling assembly (1) consisting of a cold water tank (11), a precooling tank (12) and an ice filter plate (13), wherein the ice filter plate (13) is arranged below an evaporator in the ice maker, the cold water tank (11) and the precooling tank (12) are arranged below the ice filter plate (13), the ice filter plate (13) is arranged to be tilted downward so that ice cubes falling off the evaporator can roll along the ice filter plate (13) into an ice storage basket in the ice maker, characterized in that: The cold water tank (11) is arranged on a side close to the ice filter plate (13) with a high horizontal position, and a cold water pump (111) is arranged on the outside. The precooling box (12) is arranged on a side close to the ice filter plate (13) with a low horizontal position. A precooling box water outlet (123) is arranged on the bottom of the precooling box (12) in contact with the cold water tank (11). A condenser pipe (121) is arranged in the middle of the side of the precooling box (12). The condenser pipe (121) is connected to the condenser pipe in the evaporator. The ice filter plate (13) has a cold water inlet (131) and a warm water inlet (132) arranged in a horizontal array. 2), the positions of the cold water inlet (131) and the warm water inlet (132) correspond to the cold water tank (11) and the pre-cooling tank (12), respectively; a closing component (1311) is provided between adjacent cold water inlets (131); when the temperature of water flowing through the ice filter plate (13) is lower than 5 degrees Celsius, the closing component (1311) can be opened to allow the water to flow from the cold water inlet (131) into the cold water tank (11); when the temperature of water flowing through the ice filter plate (13) is higher than 5 degrees Celsius, the closing component (1311) is closed to allow the water to flow from the warm water inlet (132) into the pre-cooling tank (12).

2. The ice making machine for pre-cooling when adding or changing water according to claim 1, characterized in that: The bottom level of the pre-cooling box (12) is higher than the bottom level of the cold water box (11).

3. The ice making machine for pre-cooling when adding or changing water according to claim 1, characterized in that: A precooling box water pump (122) is provided on the side of the precooling box (12) at the same level as the condensing pipe (121).

4. The ice making machine for pre-cooling when adding or changing water according to claim 1, characterized in that: The closing component (1311) is an elastic air bag filled with gas. When the water flowing in the ice filter plate (13) is higher than 5 degrees Celsius, the closing component (1311) expands and squeezes each other.

5. The ice-making machine for pre-cooling when adding or changing water according to claim 4, characterized in that: The width of the cold water inlet (131) is narrower than the width of the warm water inlet (132).

6. The ice making machine for pre-cooling when adding or changing water according to claim 1, characterized in that: A temperature conducting cavity (1211) is provided outside the condensing tube (121) in the precooling box (12); the temperature conducting cavity (1211) is tubular, and a volatile liquid is provided in the temperature conducting cavity (1211).

7. The ice-making machine for pre-cooling when adding or changing water according to claim 6, characterized in that: The condensing tube (121) is eccentrically arranged in the temperature conducting cavity (1211), and the condensing tube (121) is closer to the lower end of the temperature conducting cavity (1211).

8. An ice-making machine for pre-cooling when adding or changing water according to any one of claims 1 to 7, characterized in that: Baffles (133) are provided on both sides of the ice filter plate (13).

9. An ice-making machine for pre-cooling when adding or changing water according to any one of claims 1 to 7, characterized in that: A protrusion (1321) is provided at the rear end of the ice filter plate (13), and a transverse notch is provided on the inner side of the protrusion (1321) of the ice filter plate (13).

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