Ice maker and control method thereof

Abstract

The invention provides an ice maker and a control method thereof, the ice maker comprises an ice cylinder, a water tank, a water supply pipe and a screw rod, the water supply pipe is communicated with the ice cylinder and the water tank, so that the ice cylinder, the water tank and the water supply pipe form a communicating vessel structure, the ice cylinder is provided with an ice making cavity and an ice outlet communicated with the ice making cavity, and the screw rod is arranged in the ice making cavity; the ice maker further comprises a temperature sensor for detecting the water temperature and a controller for controlling the screw rod to rotate according to the water temperature. According to the ice maker provided by the invention, the ice cylinder, the water tank and the water supply pipe form a communicating vessel structure, so that the water tank can replenish water in time when the ice cylinder is lack of water, and the screw rod can be controlled to rotate through the water temperature detected by the temperature sensor, so that the ice cylinder is prevented from being frozen.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly to an ice maker and its control method. Background Art

[0002] In the existing ice maker, since the ice barrel needs to be refrigerated, the ice in the ice barrel freezes and cannot discharge ice, and even the water supply pipe connecting the water tank freezes and cannot supply water. Summary of the Invention

[0003] The purpose of the present invention is to provide an ice maker and its control method. A spiral rod is arranged in the ice barrel of the ice maker. When the water temperature detected by the temperature sensor reaches the set value, the controller can control the spiral rod to rotate, avoiding the ice barrel from freezing, and solving the problem that the ice barrel and even the water supply pipe freeze in the prior art.

[0004] To achieve one of the above-mentioned invention purposes, an embodiment of the present invention provides an ice maker, including an ice barrel, a water tank, a water supply pipe, and a spiral rod. The water supply pipe connects the ice barrel and the water tank, making the ice barrel, the water tank, and the water supply pipe form a communicating vessel structure. The ice barrel is provided with an ice-making cavity and an ice outlet communicating with the ice-making cavity. The spiral rod is arranged in the ice-making cavity. The ice maker further includes a temperature sensor for detecting the water temperature and a controller for controlling the rotation of the spiral rod according to the water temperature.

[0005] As a further improvement of an embodiment of the present invention, the spiral rod includes a screw rod body and screw teeth. The screw teeth are spirally arranged from one end of the screw rod body to the other end. A water passing hole is formed at one end of the screw teeth close to the screw rod body.

[0006] An embodiment of the present invention also provides a control method for an ice maker. The ice maker is the aforementioned ice maker. The control method includes the following steps:

[0007] Obtain the water temperature T detected by the temperature sensor, and compare the water temperature T detected by the temperature sensor with the ice-making temperature T1.

[0008] If the water temperature T detected by the temperature sensor < the ice-making temperature T1, then control the spiral rod to start rotating, and push the ice made in the ice barrel out from the ice outlet.

[0009] As a further improvement of an embodiment of the present invention, the ice maker further includes an evaporation pipe, a water pump, and a return pipe connecting the water tank and the ice barrel. The evaporation pipe is wound around the outside of the ice barrel.

[0010] After the spiral rod starts to rotate, compare the water temperature T detected by the temperature sensor with the water circulation temperature T2.

[0011] If the water temperature T detected by the temperature sensor is less than the water circulation temperature T2, the water pump is controlled to turn on; the ice-making temperature T1 is greater than the water circulation temperature T2.

[0012] As a further improvement of an embodiment of the present invention, after the water pump is turned on, the water temperature T detected by the temperature sensor is compared with the refrigeration stop temperature T3;

[0013] If the water temperature T detected by the temperature sensor is less than the refrigeration stop temperature T3, the refrigeration is controlled to stop; the water circulation temperature T2 is greater than the refrigeration stop temperature T3.

[0014] As a further improvement of an embodiment of the present invention, after the refrigeration stops, the water temperature T detected by the temperature sensor is compared with the refrigeration start temperature T4;

[0015] If the water temperature T detected by the temperature sensor is greater than the refrigeration start temperature T4, the refrigeration is controlled to start; the ice-making temperature T1 ≥ the refrigeration start temperature T4 > the refrigeration stop temperature T3.

[0016] As a further improvement of an embodiment of the present invention, if the temperature sensor measures the water temperature in the water tank, when the ice cylinder is surrounded by the water tank, the ice-making temperature T1 is 10 - 15 °C; the water circulation temperature T2 is 5 - 10 °C; the refrigeration stop temperature T3 is 1 - 3 °C; the refrigeration start temperature T4 is 3 - 5 °C.

[0017] As a further improvement of an embodiment of the present invention, if the temperature sensor measures the water temperature in the water tank, when the ice cylinder is arranged at an interval from the water tank, the ice-making temperature T1 is 15 - 20 °C; the water circulation temperature T2 is 10 - 15 °C; the refrigeration stop temperature T3 is 6 - 9 °C; the refrigeration start temperature T4 is 8 - 10 °C.

[0018] As a further improvement of an embodiment of the present invention, if the temperature sensor measures the water temperature in the ice cylinder and the temperature sensor is arranged at the water inlet position of the ice cylinder, when the ice cylinder is surrounded by the water tank, the ice-making temperature T1 is 10 - 15 °C; the water circulation temperature T2 is 5 - 10 °C; the refrigeration stop temperature T3 is -2 - 0 °C; the refrigeration start temperature T4 is 0 - 5 °C.

[0019] As a further improvement of an embodiment of the present invention, if the temperature sensor measures the water temperature in the ice cylinder and the temperature sensor is arranged at the water inlet position of the ice cylinder, when the ice cylinder is arranged at an interval from the water tank, the ice-making temperature T1 is 8 - 13 °C; the water circulation temperature T2 is 3 - 8 °C; the refrigeration stop temperature T3 is -3 - 0 °C; the refrigeration start temperature T4 is 0 - 4 °C.

[0020] As a further improvement of an embodiment of the present invention, the rotation speed of the screw rod is 5 - 10 rpm.

[0021] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0022] The ice maker provided by the present invention is provided with a spiral rod in the ice barrel. When the water temperature detected by the temperature sensor reaches the set value, the controller controls to turn on the spiral rod. If there is ice in the ice barrel, the ice in the ice barrel is pushed out from the ice outlet, causing the ice barrel to lack water, and the water in the water tank enters the ice barrel, increasing the fluidity of the water in the ice maker and preventing the ice barrel from freezing. If ice has not yet formed in the ice barrel, the spiral rod rotates to increase the fluidity of the water and also prevent the spiral rod from freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the ice maker (the ice barrel is in the water tank) in an embodiment of the present invention.

[0024] Figure 2 is Figure 1 a top view of the ice maker in

[0025] Figure 3 is Figure 2 a sectional view along line A-A in

[0026] Figure 4 is Figure 2 a sectional view along line B-B in

[0027] Figure 5 is a flowchart of the control method of the ice maker in an embodiment of the present invention.

[0028] 1. Ice barrel; 11. Ice-making cavity; 111. Inner wall of the cavity; 12. Water inlet; 13. Ice outlet; 2. Water tank; 21. Water storage cavity; 22. Water outlet; 23. Exhaust pipe; 24. Water filling port; 241. Water filling plug; 3. Evaporation pipe; 4. Water supply pipe; 41. Valve; 5. Spiral rod; 51. Screw rod body; 52. Screw rod teeth; 6. Water pump; 7. Return pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Spatial relative position terms used herein, such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The spatial relative position terms may be intended to include different orientations of the device in use or operation other than the orientations shown in the figures.

[0031] For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be located "above" the other units or features. Thus, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0032] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] An embodiment of the present invention provides an ice maker, as Figures 1 to 4 shown. The ice maker includes an ice barrel 1, a water tank 2, a water supply pipe 4, and a screw rod 5. The water supply pipe 4 connects the ice barrel 1 and the water tank 2, so that the ice barrel 1, the water tank 2, and the water supply pipe 4 form a communicating vessel structure. The ice barrel 1 is provided with an ice-making cavity 11 and an ice outlet 13 communicating with the ice-making cavity 11. The screw rod 5 is arranged in the ice-making cavity 11; the ice maker further includes a temperature sensor for detecting the water temperature and a controller for controlling the rotation of the screw rod 5 according to the water temperature.

[0034] Specifically, the water tank 2 includes a water storage cavity 21, and the bottom end of the water tank 2 is provided with a water outlet 22, and the top end is provided with a water filling port 24. The bottom of the ice barrel 1 is provided with a water inlet 12. The water supply pipe 4 is connected to the water outlet 22 and the water inlet 12. In addition, the water supply pipe 4 is provided with a valve 41 for connecting or disconnecting the water supply. The user adds water into the water storage cavity 21 through the water filling port 24, and a water filling plug 241 is also arranged at the water filling port 24.

[0035] The water tank 2, the water supply pipe 4, and the ice cylinder 1 form a communicating vessel structure. During operation, first, the water supply of the water supply pipe 4 is disconnected through the valve 41, and the water filling port 24 at the top of the water tank 2 is opened to add water into the water tank 2. Then, the valve 41 is opened to make the water supply pipe 4 in a communicating state. Under the action of the communicating vessel structure, the water in the water storage cavity 21 enters the ice making cavity 11 for ice making. When the screw rod 5 rotates to push the ice formed in the ice making cavity 11 out of the ice outlet 13, the water volume in the ice making cavity 11 decreases, and through the communicating vessel structure, the water in the water tank 2 supplies water to the ice making cavity 11 through the water supply pipe 4.

[0036] Further, the water tank 2 is also provided with an exhaust pipe 23 communicating with the water storage cavity 21, and the bottom end of the exhaust pipe 23 is within the height range of the ice making cavity 11. Preferably, in the height direction, the bottom end of the exhaust pipe 23 is arranged close to the top of the ice making cavity 11. Specifically, the exhaust pipe 23 is arranged against the inner wall of the water tank 2. Of course, the present invention does not limit the specific position of the exhaust pipe 23, and the exhaust pipe 23 can also be arranged in the water storage cavity 21 or against the outer wall of the water tank 2, or at other feasible positions.

[0037] When adding water as described above, after the water tank 2 is filled with water, the water filling port 24 is closed by the water filling plug 241, so that the upper space of the water surface in the water storage cavity 21 is kept closed, and the upper space of the water surface in the exhaust pipe 23 communicates with the atmosphere.

[0038] The valve 41 is opened to make the water supply pipe 4 in a communicating state. The water in the water tank 2 enters the ice cylinder 1 through the water supply pipe 4. The water level in the exhaust pipe 23 drops first. When the water level drops to the lowest line of the exhaust pipe 23 (i.e., the bottom end of the exhaust pipe 23), the water level in the exhaust pipe 23 will remain unchanged. Thereafter, for every drop of water injected into the ice cylinder 1, an air bubble will be sucked from the exhaust pipe 23 into the water storage cavity 21, crossing the bottom end of the exhaust pipe 23, and supplementing the closed air layer at the top of the water storage cavity 21 to maintain the air pressure balance inside and outside the water storage cavity 21 until the liquid level in the ice cylinder 1 reaches the position of the bottom end of the exhaust pipe 23, and the water supply stops.

[0039] In some embodiments, the screw rod 5 includes a screw rod body 51 and screw teeth 52. The screw teeth 52 are spirally arranged from one end of the screw rod body 51 to the other end, and a water passing hole is formed at one end of the screw teeth 52 close to the screw rod body 51. Under the action of the water passing hole, the water in the ice making cavity 11 can flow freely in the axial direction of the ice making cavity and is not blocked by the screw teeth 52.

[0040] The present invention also provides a control method for the foregoing ice maker. The control method includes the following steps:

[0041] Obtain the water temperature T detected by the temperature sensor, and compare the water temperature T detected by the temperature sensor with the ice making temperature T1;

[0042] If the water temperature T detected by the temperature sensor is less than the ice-making temperature T1, the control screw rod 5 starts to rotate, and the ice made in the ice cylinder 1 is pushed out from the ice outlet 13.

[0043] When the water temperature T detected by the temperature sensor is less than the ice-making temperature T1, the water in the ice-making chamber 11 starts to freeze. Starting the rotation of the screw rod 5 can push the ice generated in the ice cylinder 1 to the ice outlet 13, so that the ice exits from the ice outlet 13. The water in the ice-making chamber 11 stays in the ice-making chamber 11 under the action of the water through holes of the screw rod 5 and continues to condense into ice.

[0044] After the water in the ice-making chamber 11 freezes and is pushed out by the screw rod 5, the amount of water in the ice-making chamber 11 decreases. The water tank 2 supplies water to the ice-making chamber 11 through a communicating vessel structure. On the one hand, the water in the water tank 2 enters the ice-making chamber 11, causing the temperature in the ice-making chamber 11 to rise slightly. On the other hand, it also increases the fluidity of the water in the ice maker and prevents the ice cylinder 1 from freezing.

[0045] In some embodiments, the ice maker further includes an evaporation tube 3, a water pump 6 connecting the water tank 2 and the ice cylinder 1, and a return pipe 7. The evaporation tube 3 is wound around the outside of the ice cylinder 1. After the screw rod 5 starts to rotate, the water temperature T detected by the temperature sensor is compared with the water circulation temperature T2. If the water temperature T detected by the temperature sensor is less than the water circulation temperature T2, the control water pump 6 is turned on. The ice-making temperature T1 > the water circulation temperature T2.

[0046] The ice cylinder 1 is also provided with a cavity inner wall 111 formed around the ice-making chamber 11. The evaporation tube 3 is wound around the outside of the ice cylinder 1, so that in the radial direction of the ice-making chamber 11, the temperature gradually decreases from the axis of the ice-making chamber 11 to the cavity inner wall 111. Therefore, the ice in the ice-making chamber 11 starts to form from the cavity inner wall 111.

[0047] After the screw rod 5 starts to rotate when the water temperature T detected by the temperature sensor is less than the ice-making temperature T1, if the water temperature T detected by the temperature sensor is less than the water circulation temperature T2, due to continuous refrigeration, the water circulation temperature T2 < the ice-making temperature T1, that is, the water temperature T is lower than when the screw rod 5 starts to rotate. The setting of the water pump 6 and the return pipe 7 connecting the water tank 2 and the ice cylinder 1 enables the water in the water tank 2 and the ice cylinder 1 to circulate. Turning on the water pump 6, the ice formed on the cavity inner wall 111 of the ice cylinder 1 is scraped off by the screw teeth 52 of the screw rod 5 and pushed out of the ice outlet 13. The central part of the ice-making chamber 11 uses the water through holes on the screw teeth 52 to send water upward, enabling the water in the water tank 2 and the ice cylinder 1 to circulate, with greater water fluidity and the ice cylinder 1 not easily freezing.

[0048] Further, after the water pump 6 is turned on, the water temperature T detected by the temperature sensor is compared with the stop-refrigeration temperature T3. If the water temperature T detected by the temperature sensor is less than the stop-refrigeration temperature T3, the control stops refrigeration. The water circulation temperature T2 > the stop-refrigeration temperature T3.

[0049] The stop-refrigeration temperature T3 is the lower limit temperature for the ice maker to make ice. If the water temperature T detected by the temperature sensor has dropped to the lower limit temperature for the ice maker to make ice, refrigeration needs to be stopped immediately to prevent the ice barrel 1 and the end of the water supply pipe 4 close to the ice barrel 1 from freezing and unable to continue making ice and supplying water. And since the water pump 6 is turned on at this time, the water in the ice barrel 1 and the water in the water tank 2 are in a circulating connection state. After the refrigerated water in the ice barrel 1 returns to the water tank 2, it will lower the temperature of the water in the water tank 2. Therefore, when the water temperature T detected by the temperature sensor drops to the lower limit temperature for the ice maker to make ice, it also prevents the water in the water tank 2 from freezing and unable to supply water to the ice barrel 1.

[0050] Further, after stopping refrigeration, compare the water temperature T detected by the temperature sensor with the start-refrigeration temperature T4; if the water temperature T detected by the temperature sensor > the start-refrigeration temperature T4, then control the start of refrigeration; the ice-making temperature T1 ≥ the start-refrigeration temperature T4 > the stop-refrigeration temperature T3.

[0051] After stopping refrigeration, the temperature of the ice barrel 1 gradually rises, and the water temperature T detected by the temperature sensor also gradually rises. Until it rises to the start-refrigeration temperature T4, the temperature is too high and refrigeration is required.

[0052] The aforementioned temperature sensor can be set inside or outside the water tank 2 to measure the water temperature in the water tank 2; it can also be set inside or outside the ice barrel 1 to measure the water temperature in the ice barrel 1. When the temperature sensor measures the water temperature in the water tank 2 or the water temperature in the ice barrel 1, the aforementioned ice-making temperature T1, water circulation temperature T2, stop-refrigeration temperature T3, and start-refrigeration temperature T4 are not the same. In addition, the ice barrel 1 can be set inside the water tank 2, or the water in the water tank 2 surrounds the ice barrel 1, as Figure 3 shown; the ice barrel 1 can also be set outside the water tank 2, or the ice barrel 1 and the water tank 2 are set separately (not shown). The aforementioned ice-making temperature T1, water circulation temperature T2, stop-refrigeration temperature T3, and start-refrigeration temperature T4 are also not the same.

[0053] Preferably, if the temperature sensor measures the water temperature in the water tank 2, when the ice barrel 1 is surrounded by the water tank 2, the ice-making temperature T1 is 10 - 15°C; the water circulation temperature T2 is 5 - 10°C; the stop-refrigeration temperature T3 is 1 - 3°C; the start-refrigeration temperature T4 is 3 - 5°C.

[0054] If the temperature sensor measures the water temperature in the water tank 2, when the ice barrel 1 is set at an interval from the water tank 2, the ice-making temperature T1 is 15 - 20°C; the water circulation temperature T2 is 10 - 15°C; the stop-refrigeration temperature T = 6 - 9°C; the start-refrigeration temperature T4 is 8 - 10°C.

[0055] If the temperature sensor measures the temperature of the water in the ice cylinder 1, and the temperature sensor is set at the water inlet position of the ice cylinder 1, when the ice cylinder 1 is surrounded by the water tank 2, the ice-making temperature T1 is 10 - 15 °C; the water circulation temperature T2 is 5 - 10 °C; the stop refrigeration temperature T3 is -2 - 0 °C; the start refrigeration temperature T4 is 0 - 5 °C.

[0056] If the temperature sensor measures the temperature of the water in the ice cylinder 1, and the temperature sensor is set at the water inlet position of the ice cylinder 1, when the ice cylinder 1 and the water tank 2 are arranged at intervals, the ice-making temperature T1 is 8 - 13 °C; the water circulation temperature T2 is 3 - 8 °C; the stop refrigeration temperature T3 is -3 - 0 °C; the start refrigeration temperature T4 is 0 - 4 °C.

[0057] In the above four cases, when the temperature sensor measures the temperature of the water in the water tank 2, since when the ice cylinder 1 is surrounded by the water tank 2, part of the cold quantity of the cold source in the ice cylinder 1 will diffuse into the water tank 2, compared with the case where the ice cylinder 1 and the water tank 2 are arranged at intervals, at this time, the temperature difference between the water in the water tank 2 and the water in the ice cylinder 1 is smaller, that is, the water in the water tank 2 is closer to the temperature of the water in the ice cylinder 1. To prevent the ice cylinder 1 from freezing, T1 - T4 can be relatively low as a whole.

[0058] If the temperature sensor measures the temperature of the water in the ice cylinder 1, when the ice cylinder 1 is surrounded by the water tank 2, the temperature difference between the water in the water tank 2 and the water in the ice cylinder 1 is smaller, while when the ice cylinder 1 and the water tank 2 are arranged at intervals, the temperature difference between the water in the water tank 2 and the water in the ice cylinder 1 is larger. On the premise of ensuring that the ice cylinder 1 is not frozen, when the ice cylinder 1 and the water tank 2 are arranged at intervals, T1 - T4 can be relatively low as a whole.

[0059] When the temperature sensor measures the temperature of the water in the ice cylinder 1, the temperature sensor is set at the water inlet 12. When the ice cylinder 1 is surrounded by the water tank 2, in the initial stage of cooling, the water at the water inlet 12 of the ice cylinder 1 has not had time to absorb the cold quantity and is approximately the same as the water temperature in the water tank 2. Therefore, when the temperature sensor measures the temperature of the water in the ice cylinder 1 when the ice cylinder 1 is surrounded by the water tank 2, and when the temperature sensor measures the temperature of the water in the water tank 2, the set ice-making temperature T1 and the water circulation temperature T2 are the same. As the refrigeration progresses, when the temperature sensor measures the temperature of the water in the ice cylinder 1, the stop refrigeration temperature T3 and the start refrigeration temperature T4 are relatively lower.

[0060] Furthermore, after the water pump 6 is turned on, the rotation speed of the screw rod 5 is greater than that before the water pump 6 is turned on. When the water pump 6 is turned on, the temperature of the water is lower than that before the water pump 6 is turned on, that is, the ice-making speed will be faster. A greater rotation speed of the screw rod 5 can quickly scrape the made ice from the inner wall 111 of the cavity and push it out of the ice-making cavity 11.

[0061] Preferably, the rotation speed of the screw rod 5 is 5-10 rpm. Since it takes time for water to condense into ice, the rotation speed of the screw rod 5 cannot be too high, otherwise it is easy to cause the ice formation speed to lag behind. However, it cannot be too low either, otherwise the screw rod 5 is likely to be frozen and unable to rotate.

[0062] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0063] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An ice maker, characterized in that, It includes an ice cylinder, a water tank, a water supply pipe, and a screw rod. The water supply pipe connects the ice cylinder and the water tank, so that the ice cylinder, the water tank, and the water supply pipe form a communicating vessel structure. The ice cylinder is provided with an ice-making cavity and an ice outlet communicating with the ice-making cavity, and the screw rod is arranged in the ice-making cavity; the ice maker further includes a temperature sensor for detecting the water temperature and a controller for controlling the rotation of the screw rod according to the water temperature.

2. The ice maker according to claim 1, wherein, The screw rod includes a screw rod body and screw rod teeth. The screw rod teeth are spirally arranged from one end of the screw rod body to the other end, and water through holes are formed at one end of the screw rod teeth close to the screw rod body.

3. A control method for an ice maker, characterized in that, The ice maker is the ice maker described in claim 2, and the control method includes the following steps: Obtain the water temperature T detected by the temperature sensor, and compare the water temperature T detected by the temperature sensor with the ice-making temperature T1. If the water temperature T detected by the temperature sensor < the ice-making temperature T1, then control the screw rod to start rotating and push the ice made in the ice cylinder out from the ice outlet.

4. The control method of the ice maker according to claim 3, characterized in that, The ice maker further includes an evaporation pipe, a water pump connecting the water tank and the ice cylinder, and a return pipe. The evaporation pipe is wound around the outside of the ice cylinder. After the screw rod starts to rotate, compare the water temperature T detected by the temperature sensor with the water circulation temperature T2. If the water temperature T detected by the temperature sensor < the water circulation temperature T2, then control the water pump to open; the ice-making temperature T1 > the water circulation temperature T2.

5. The control method of the ice maker according to claim 4, wherein, After the water pump is opened, compare the water temperature T detected by the temperature sensor with the stop refrigeration temperature T3. If the water temperature T detected by the temperature sensor < the stop refrigeration temperature T3, then control to stop refrigeration; the water circulation temperature T2 > the stop refrigeration temperature T3.

6. The control method of the ice maker according to claim 5, characterized in that, After stopping refrigeration, compare the water temperature T detected by the temperature sensor with the start refrigeration temperature T4. If the water temperature T detected by the temperature sensor > the start refrigeration temperature T4, then control to start refrigeration; the ice-making temperature T1 ≥ the start refrigeration temperature T4 > the stop refrigeration temperature T3.

7. The control method of an ice maker according to claim 6, wherein, If the temperature sensor measures the water temperature in the water tank, when the ice cylinder is surrounded by the water tank, then the ice-making temperature T1 is 10 - 15°C; the water circulation temperature T2 is 5 - 10°C; the stop refrigeration temperature T3 is 1 - 3°C; the start refrigeration temperature T4 is 3 - 5°C.

8. The control method of the ice maker according to claim 6, characterized in that, If the temperature sensor measures the water temperature in the water tank, when the ice cylinder is arranged at an interval from the water tank, then the ice-making temperature T1 is 15 - 20°C; the water circulation temperature T2 is 10 - 15°C; the stop refrigeration temperature T3 is 6 - 9°C; the start refrigeration temperature T4 is 8 - 10°C.

9. The control method of an ice maker according to claim 6, wherein, If the temperature sensor measures the water temperature in the ice cylinder, and the temperature sensor is arranged at the water inlet position of the ice cylinder, when the ice cylinder is surrounded by the water tank, then the ice-making temperature T1 is 10 - 15°C; the water circulation temperature T2 is 5 - 10°C; the stop refrigeration temperature T3 is -2 - 0°C; the start refrigeration temperature T4 is 0 - 5°C.

10. The control method of an ice maker according to claim 6, characterized in that, If the temperature sensor measures the water temperature in the ice cylinder, and the temperature sensor is arranged at the water inlet position of the ice cylinder, when the ice cylinder is arranged at an interval from the water tank, then the ice-making temperature T1 is 8 - 13°C; the water circulation temperature T2 is 3 - 8°C; the stop refrigeration temperature T3 is -3 - 0°C; the start refrigeration temperature T4 is 0 - 4°C.

11. The control method of the ice maker according to claim 4, characterized in that, The rotation speed of the screw rod is 5 - 10 rpm.

Images