Ice making control system and ice maker

Abstract

The ice-making control system comprises an ice-making container, the ice-making container is provided with a storage cavity with an upward opening, the ice-making container is provided with a cover body used for opening or closing the opening of the storage cavity, the storage cavity is provided with an ice-making height line located below the opening of the storage cavity, and the outer bottom of the ice-making container is in contact with a refrigeration module; the ice-making container or the cover body is provided with a stirring assembly located above the ice-making height line and a detection unit, and the detection unit and the refrigeration module are both electrically connected with the control module. In the process that water in the storage cavity is gradually cooled and solidified into ice blocks from bottom to top, the stirring assembly stirs the water above the ice-making height line to discharge bubbles in the water, so that the ice blocks are crystal clear, and the detection unit is used for detecting whether the height position of the ice blocks reaches the ice-making height line or not. And when the ice making height line is reached, the control module controls the refrigeration module to stop working, so that ice blocks with relatively high dimensional precision are obtained.

Description

Technical Field

[0001] The invention relates to an ice making control system and an ice making machine. Background Art

[0002] An ice maker is a refrigeration machine that cools water in a container through a refrigeration system to generate ice cubes. At present, some beverage shops, dessert shops, bars and other consumer places on the market use molds to form ice cubes of corresponding shapes in order to meet the preferences of consumers.

[0003] In the prior art, if one wants to obtain ice cubes with relatively precise shapes and sizes, multiple tests are required to add a certain amount of water according to the expansion of the ice cubes, which brings troubles to actual use, and the accuracy of the shape and size of the ice cubes is also low.

[0004] In addition, the ice cubes made by conventional ice-making devices are not crystal clear because a large number of bubbles exist in the ice cubes. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide an ice-making control system that can control the size accuracy of ice cubes and produce crystal clear ice cubes; the second object is to provide an ice-making machine using the above-mentioned ice-making control system.

[0006] According to an embodiment of the first aspect of the present invention, an ice-making control system includes: an ice-making container, the ice-making container having a storage cavity opening upward, the ice-making container is provided with a cover body for opening or closing the opening of the storage cavity, the storage cavity has an ice-making height line located below its opening, the outer bottom of the ice-making container is in contact with a refrigeration module, the ice-making container or the cover body is provided with a stirring assembly located above the ice-making height line and a detection unit for detecting whether the height position of ice cubes reaches the ice-making height line, and the detection unit and the refrigeration module are both electrically connected to a control module.

[0007] The ice making control system according to the embodiment of the present invention has at least the following beneficial effects:

[0008] The ice-making control system of the above structure transmits the cold energy to the bottom of the ice-making container by the refrigeration module, and the water in the storage chamber is cooled and gradually cooled and solidified into ice cubes from bottom to top. During this process, the stirring component continuously stirs the water above the ice-making height line to expel the bubbles in the water, so that the finished ice cubes are crystal clear. In addition, the detection unit is used to continuously detect whether the height position of the ice cube reaches the ice-making height line. When the ice-making height line is reached, the control module controls the refrigeration module to stop working, thereby obtaining ice cubes with higher dimensional accuracy.

[0009] In some embodiments of the present invention, the detection unit includes an ultrasonic probe arranged on the wall surface of the opening of the cover body toward the storage cavity, the transmitting end of the ultrasonic probe is used to emit ultrasonic waves downward, and the receiving end of the ultrasonic probe can receive ultrasonic wave information fed back from the real ice interface and the crushed ice interface to determine whether the height of the ice cubes reaches the ice-making height line.

[0010] In some embodiments of the present invention, the receiving end of the ultrasonic probe is connected to an oscilloscope, and the oscilloscope is provided with an identification module electrically connected to the control module. The oscilloscope is used to receive an echo spectrum reflected by the ultrasonic wave, and the identification module can identify the first reflected wave reflected from the crushed ice interface and the second reflected wave reflected from the real ice interface in the echo spectrum. The receiving end of the ultrasonic probe can respectively detect the reflection time t1 of the first reflected wave and the reflection time t2 of the second reflected wave, and the control module can calculate the distance h1 between the receiving end of the ultrasonic probe and the real ice interface based on t1 and t2.

[0011] In some embodiments of the present invention, an acoustic resistor electrically connected to the control module is provided on the cover body, and the acoustic resistor is used to sense a first reflected wave reflected from the crushed ice interface and a second reflected wave reflected from the real ice interface. The control module respectively detects the reflection time t1 of the first reflected wave and the reflection time t2 of the second reflected wave, and calculates the distance h1 between the receiving end of the ultrasonic probe and the real ice interface based on t1 and t2.

[0012] In some embodiments of the present invention, the speed of the first reflected wave propagating in water is V1, the speed of the second reflected wave propagating in water is V2, the speed of the second reflected wave propagating in crushed ice is V3, the distance between the receiving end of the ultrasonic probe and the crushed ice interface is S1=V1*t1, the time length of the second reflected wave propagating in water is t3=S1 / V2, then the time length of the second reflected wave propagating in the crushed ice is t4=t2-t3, the distance between the crushed ice interface and the real ice interface is S2=V3*t4, h1=S1+S2, the height distance between the ice making height line and the receiving end of the ultrasonic probe is h, and when h1 is close to or equal to h, the control module controls the refrigeration module to stop working.

[0013] In some embodiments of the present invention, a water level mark above the ice-making height line is provided in the storage chamber, and the stirring assembly includes an impeller rotatably provided on the wall surface of the opening of the cover body toward the storage chamber and a motor driving the impeller to rotate; when the cover body closes the opening of the storage chamber, the impeller is located between the water level mark and the ice-making height line to drive the water above the ice-making height line to circulate.

[0014] In some embodiments of the present invention, the detection unit includes a temperature sensing probe provided on the wall surface of the opening of the cover body toward the storage cavity, and when the cover body closes the opening of the storage cavity, the sensing end of the temperature sensing probe is flush with the height of the ice making height line.

[0015] In some embodiments of the present invention, the detection unit includes a movable rod telescopically arranged in a direction perpendicular to the cover body, the movable rod is connected to a driver for driving its reciprocating telescopic movement, and a pressure detection unit is provided at one end of the movable rod extending from the storage chamber. The pressure detection unit has a contact component extending to a position corresponding to the ice-making height line. When the pressure detection unit reaches a preset pressure value, it is determined that the height position of the ice cube reaches the ice-making height line.

[0016] In some embodiments of the present invention, the driver includes an eccentric motor, the cover body is provided with a through hole perpendicular to its thickness direction for the movable rod to be telescopically moved, the end of the movable rod close to the eccentric motor is provided with a waist-shaped hole orthogonal to the length direction of the movable rod, the output shaft of the eccentric motor is passed through the waist-shaped hole, the contact component is a contact probe telescopically arranged at the end of the movable rod away from the eccentric motor, a varistor and a circuit board connected to the varistor are arranged inside the movable rod, the circuit board is electrically connected to the control module, and a spring is arranged between the varistor and the contact probe.

[0017] According to an embodiment of the second aspect of the present invention, an ice-making machine comprises an ice-making control system of any of the above technical solutions. The ice-making machine transmits cold energy to the bottom of the ice-making container by a refrigeration module, and the water in the storage chamber is cooled and gradually cooled and solidified from bottom to top to form ice cubes. During this process, the stirring component continuously stirs the water above the ice-making height line to discharge the bubbles in the water, so that the ice cubes are crystal clear. In addition, the detection unit is used to continuously detect whether the height position of the ice cubes reaches the ice-making height line. When the ice-making height line is reached, the control module controls the refrigeration module to stop working, thereby obtaining ice cubes with higher dimensional accuracy.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 is a structural schematic diagram of Embodiment 1 of the ice making control system of the present invention;

[0021] Figure 2 yes Figure 1 A schematic cross-sectional view of the embodiment when the cover is closed;

[0022] Figure 3 is a structural schematic diagram of a second embodiment of an ice making control system of the present invention;

[0023] Figure 4 It is a schematic diagram of the ice making control system when making ice to form water, crushed ice and solid ice;

[0024] Figure 5 is a structural schematic diagram of the cover part of the third embodiment of the ice making control system of the present invention;

[0025] Figure 6 is a cross-sectional schematic diagram of a third embodiment of an ice making control system of the present invention;

[0026] Figure 7 It is a schematic diagram of the stirring component driving the water flow.

[0027] Reference numerals:

[0028] Ice-making container 100; storage chamber 110; real ice interface 111; crushed ice interface 112; cover 120; perforation 121; ice-making height line 101; water level scale line 102; refrigeration module 200; stirring assembly 300; ultrasonic probe 410; temperature sensing probe 420; movable rod 431; eccentric motor 432; contact probe 433; varistor 434; circuit board 435; spring member 436; waist-shaped hole 437. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference Figures 1 to 7 An ice-making control system of the present invention comprises: an ice-making container 100, wherein the ice-making container 100 has a storage cavity 110 opening upward, the ice-making container 100 is provided with a cover 120 for opening or closing the opening of the storage cavity 110, the storage cavity 110 has an ice-making height line 101 located below the opening thereof, the outer bottom of the ice-making container 100 contacts a refrigeration module 200, the ice-making container 100 or the cover 120 is provided with a stirring assembly 300 located above the ice-making height line 101 and a detection unit for detecting whether the height position of ice cubes reaches the ice-making height line 101, and the detection unit and the refrigeration module 200 are both electrically connected to a control module.

[0034] The ice-making control system of the above structure transmits the cold energy to the bottom of the ice-making container 100 by the refrigeration module 200, and the water in the storage chamber 110 is cooled and gradually cooled and solidified into ice cubes from bottom to top. During this process, the stirring component 300 continuously stirs the water above the ice-making height line 101 to expel the bubbles in the water, so that the finished ice cubes are crystal clear, and the detection unit is used to continuously detect whether the height position of the ice cube reaches the ice-making height line 101. When the ice-making height line 101 is reached, the control module controls the refrigeration module 200 to stop working, thereby obtaining ice cubes with higher size accuracy.

[0035] It should be noted that, for household ice makers, in order to meet the need for miniaturization, the refrigeration module 200 generally uses a semiconductor refrigeration chip to exchange heat with the ice container 100. In this embodiment, the semiconductor refrigeration chip is installed at the bottom of the ice container 100, the cold end of the semiconductor refrigeration chip is attached to the outer bottom surface of the ice container 100, and the hot end of the semiconductor refrigeration chip contacts an aluminum heat exchanger, and the fan blows away the heat on the heat exchanger to achieve heat exchange. Specifically, the heat exchanger has a plurality of heat sinks arranged in parallel, the air intake end of the fan faces downward, and the exhaust end faces upward, and the fan blows the external air into between the heat sinks, and then discharges it outward along the two ends of the heat sink.

[0036] See also Figure 1 , Figure 2 and Figure 4 In some embodiments of the present invention, the detection unit includes an ultrasonic probe 410 disposed on the wall of the cover body 120 facing the opening of the storage cavity 110, the transmitting end of the ultrasonic probe 410 is used to transmit ultrasonic waves downward, and the receiving end of the ultrasonic probe 410 can receive ultrasonic wave information fed back from the real ice interface 111 and the crushed ice interface 112 to determine whether the height of the ice cubes reaches the ice making height line 101.

[0037] It should be noted that, in the process that the water in the storage chamber 110 is cooled and gradually cooled and solidified into ice from bottom to top, the upper surface of the ice entity formed is the real ice interface 111, and the part above the real ice interface 111 may not only contain water, but also a crushed ice layer between the water and the real ice interface 111, and most of these crushed ice layers exist in a state of solid-liquid mixture, and the junction between the water and the crushed ice layer constitutes the crushed ice interface 112. This is because although the temperature of some water has dropped below zero, it has been formed for a short time and will exist in the form of thin ice or crushed ice without being completely frozen into solid ice. If only conventional ultrasonic detection means are used for detection, part of the sound wave is reflected at the crushed ice interface 112, and part of the sound wave is reflected at the real ice interface 111, so that accurate height data of the real ice interface 111 cannot be obtained, and it is very easy to make a misjudgment. The above ice making control system can obtain ultrasonic information fed back from the real ice interface 111 and the crushed ice interface 112. The ultrasonic information obtained is not limited to reflection duration, spectrum data, sound wave intensity, etc., so as to determine whether the real ice interface 111 reaches the ice making height line 101.

[0038] In some embodiments of the present invention, the receiving end of the ultrasonic probe 410 is connected to an oscilloscope, and the oscilloscope is provided with an identification module electrically connected to the control module. The oscilloscope is used to receive the echo spectrum reflected by the ultrasonic wave, and the identification module can identify the first reflected wave reflected from the crushed ice interface 112 and the second reflected wave reflected from the real ice interface 111 in the echo spectrum. The receiving end of the ultrasonic probe 410 can detect the reflection time t1 of the first reflected wave and the reflection time t2 of the second reflected wave respectively, and the control module can calculate the distance h1 between the receiving end of the ultrasonic probe 410 and the real ice interface 111 according to t1 and t2. It should be noted that when high-frequency sound waves pass through water, crushed ice and real ice, water and crushed ice have little weakening effect on high-frequency sound waves, while real ice can absorb a large amount of high-frequency sound waves, so the frequency of the second reflected wave reflected from the real ice interface 111 is higher than the frequency of the first reflected wave reflected from the crushed ice interface 112. This is because the acoustic impedance of water and ice is very different, which causes the ultrasound to be strongly reflected at the interface between water and ice. Specifically, the acoustic impedance of water is: Z_{water}≈1.48times 10^6,text{kg / (m 2 ·s)}, the acoustic impedance of ice: Z_{ice}≈3.6t imes 10^6,text{kg / (m 2 ·s)}, the reflection coefficient of the sound wave is: R = frac{Z_{ice}-Z_{water}} / {Z_{ice}+Z_{water}}≈0.42, that is, about 42% of the ultrasonic energy is reflected, forming an obvious and regular echo.

[0039] Taking the example that the ultrasonic probe 410 is located below the water surface and above the ice surface, the user pre-transmits an ultrasonic wave with fixed parameters toward the completely frozen ice surface to obtain a first standard spectrum diagram after the ultrasonic wave is reflected by the solid ice surface, and transmits the above-mentioned ultrasonic wave with fixed parameters toward the crushed ice interface 112 between the water and the crushed ice to obtain a second standard spectrum diagram after the ultrasonic wave is reflected by the crushed ice interface 112. The first standard spectrum diagram and the second standard spectrum diagram are pre-set in the program of the control module, and the waveform of the actual real-time reflected echo spectrum detected is compared with the above-mentioned first standard spectrum diagram or the second standard spectrum diagram, so as to identify the first reflected wave and the second reflected wave.

[0040] It should be noted that the waveform of the echo reflected by the frozen solid ice surface is usually a regular sine wave, and the peaks, troughs, wavelength, frequency, phase and period of the amplitude of the sound wave are all regular fixed values. If the waveform of the echo spectrum actually reflected by the ultrasonic wave in real time is a regular sine wave, and all the values ​​are consistent with the standard values ​​set in the program, then the reflecting surface is judged to be a solid ice surface, and the sound wave is the second reflected wave. If the waveform of the echo spectrum actually reflected by the ultrasonic wave in real time is an irregular and chaotic waveform, then the reflecting surface is judged to be crushed ice or ice flakes, and the sound wave is the first reflected wave. Taking the example that the ultrasonic probe 410 is located below the water surface and above the ice surface, since the first reflected wave only passes through water, the propagation speed of the first reflected wave in the water can be determined in advance as a calculation constant. On the premise of obtaining the reflection time t1 of the first reflected wave, the water depth between the ultrasonic probe 410 and the crushed ice layer can be obtained. The second reflected wave passes through water and crushed ice. The propagation speed of the second reflected wave in the water and the propagation speed of the second reflected wave in the crushed ice can also be determined in advance as a calculation constant. The thickness of the crushed ice layer can be calculated in conjunction with the reflection time t2 of the second reflected wave. The thickness of the crushed ice layer is superimposed on the water depth between the ultrasonic probe 410 and the crushed ice layer to obtain the height from the ultrasonic probe 410 to the real ice interface 111, and finally it is determined whether the real ice interface 111 coincides with the ice making height line 101.

[0041] Of course, it is conceivable that when the ultrasonic probe 410 is located above the water surface, it is also necessary to measure the propagation time of the first reflected wave and the second reflected wave in the air, and then use the above measurement method to accurately measure the height position of the real ice interface 111.

[0042] In some embodiments of the present invention, the cover 120 is provided with an acoustic resistor electrically connected to the control module, and the acoustic resistor is used to sense the first reflected wave reflected from the crushed ice interface 112 and the second reflected wave reflected from the real ice interface 111, and the control module detects the reflection time t1 of the first reflected wave and the reflection time t2 of the second reflected wave, and calculates the distance h1 between the receiving end of the ultrasonic probe 410 and the real ice interface 111 according to t1 and t2. It can be understood that the acoustic resistor can identify reflected waves with different sound intensities, and the acoustic resistor feeds back the electrical signal to the control module, and the control module is preset with the standard data corresponding to the first reflected wave and the standard data corresponding to the second reflected wave, so that the first reflected wave and the second reflected wave are respectively identified by the sound intensity, and then refer to the above-mentioned measurement method: taking the ultrasonic probe 410 as an example, which is located below the water surface and above the ice surface, since the first reflected wave only passes through the water, the propagation speed of the first reflected wave in the water can be measured in advance as a calculation constant, and the reflection time t1 of the first reflected wave is obtained. The water depth between the ultrasonic probe 410 and the crushed ice layer can be obtained. The second reflected wave passes through the water and the crushed ice. The propagation speed of the second reflected wave in the water and the propagation speed of the second reflected wave in the crushed ice can also be determined in advance as a calculation constant, and the thickness of the crushed ice layer can be inferred by combining the reflection time t2 of the second reflected wave. The height from the ultrasonic probe 410 to the real ice interface 111 can be obtained by superimposing the thickness of the crushed ice layer on the water depth between the ultrasonic probe 410 and the crushed ice layer, and finally determining whether the real ice interface 111 has reached the height position of the ice-making height line 101.

[0043] In some embodiments of the present invention, the speed of the first reflected wave propagating in water is V1, the speed of the second reflected wave propagating in water is V2, the speed of the second reflected wave propagating in crushed ice is V3, the distance between the receiving end of the ultrasonic probe 410 and the crushed ice interface 112 is S1=V1*t1, the time length of the second reflected wave propagating in water is t3=S1 / V2, then the time length of the second reflected wave propagating in the crushed ice is t4=t2-t3, the distance between the crushed ice interface 112 and the real ice interface 111 is S2=V3*t4, h1=S1+S2, the height distance between the ice making height line 101 and the receiving end of the ultrasonic probe 410 is h, and when h1 is close to or equal to h, the control module controls the refrigeration module 200 to stop working. It is understandable that V1, V2, and V3 can be tested and measured in advance, and the receiving end of the ultrasonic probe 410 can directly obtain t1 and t2. By calculating the distance S1 between the receiving end of the ultrasonic probe 410 and the crushed ice interface 112, the duration t3 of the second reflected wave propagating in the water and the duration t4 of the second reflected wave propagating in the crushed ice can be calculated, thereby finally obtaining the distance h1 between the receiving end of the ultrasonic probe 410 and the real ice interface 111. Since the height distance h between the ice-making height line 101 and the receiving end of the ultrasonic probe 410 is a fixed known value, by comparing h1 and h, it can be known whether the real ice interface 111 has reached the height position of the ice-making height line 101.

[0044] Of course, in other embodiments, after obtaining h1 by the above-mentioned measurement method, the height of the ice cube can be directly obtained by subtracting h1 from the distance between the ultrasonic probe 410 and the inner bottom surface of the ice-making container 100, and then directly compared with the size of the ice-making scale line without conversion, which is more intuitive.

[0045] See also Figure 1 , Figure 2 and Figure 7In some embodiments of the present invention, a water level mark 102 located above the ice making height line 101 is provided in the storage chamber 110, and the stirring assembly 300 includes an impeller rotatably provided on the wall surface of the cover body 120 facing the opening of the storage chamber 110 and a motor driving the impeller to rotate; when the cover body 120 closes the opening of the storage chamber 110, the impeller is located between the water level mark 102 and the ice making height line 101 to drive the water located above the ice making height line 101 to circulate. It should be noted that when the user pours water into the storage chamber 110 before making ice, the water level needs to exceed the ice making height line 101 and not be higher than the water level mark 102. The water level mark 102 only limits the highest position of the water level, thereby reserving a height space for the expansion of ice cubes. When the motor rotates, it drives the impeller to rotate, and the impeller stirs the water above the water level mark 102 to circulate, thereby preventing bubbles from being generated during the ice making process, which is conducive to forming ice cubes with higher transparency.

[0046] See also Figure 3 In some embodiments of the present invention, the detection unit includes a temperature sensing probe 420 disposed on the wall of the cover 120 facing the opening of the storage cavity 110. When the cover 120 closes the opening of the storage cavity 110, the sensing end of the temperature sensing probe 420 is flush with the height of the ice making height line 101. It can be understood that when the real ice interface 111 gradually rises to the ice making height line 101, the temperature sensed by the temperature sensing probe 420 reaches the temperature of the real ice, such as -2°C to -1°C. If the temperature sensing probe 420 contacts water, the temperature is generally not lower than 0°C. The temperature sensing probe 420 can be used together with the above-mentioned ultrasonic probe 410, which is conducive to further improving the accuracy of the measurement.

[0047] See also Figure 5 and Figure 6In some embodiments of the present invention, the detection unit includes an active rod 431 that is telescopically arranged in a direction perpendicular to the cover body 120, and the active rod 431 is connected to a driver that drives its reciprocating telescopic movement. One end of the active rod 431 that is extended from the storage chamber 110 is provided with a pressure detection unit, and the pressure detection unit has a contact component that extends to a position corresponding to the ice-making height line 101. When the pressure detection unit reaches a preset pressure value, it is determined that the height position of the ice cube reaches the ice-making height line 101. It should be noted that the freezing method during ice formation is a wrapping type. After testing, when a travel switch with a sensing end flush with the ice-making height line 101 is used, an upward force cannot be generated to trigger the travel switch. The driver of the detection unit of the above structure continuously drives the movable rod 431 to move up and down reciprocatingly during the ice-making process. When the contact part contacts the solid ice surface, it can reach the preset pressure value, thereby determining that the height position of the ice cube reaches the position of the ice-making height line 101. On the contrary, if the pressure detection unit contacts water or crushed ice, the pressure sensed by the pressure detection unit does not reach the preset pressure value, thereby determining that the refrigeration module 200 needs to continue working.

[0048] See also Figure 5 and Figure 6 In some embodiments of the present invention, the driver includes an eccentric motor 432, the cover body 120 is provided with a through hole 121 perpendicular to its thickness direction for the movable rod 431 to telescopically move, the movable rod 431 is provided with a waist-shaped hole 437 orthogonal to the length direction of the movable rod 431 at one end close to the eccentric motor 432, the output shaft of the eccentric motor 432 is passed through the waist-shaped hole 437, the contact component is a contact probe 433 telescopically arranged at one end of the movable rod 431 away from the eccentric motor 432, a varistor 434 and a circuit board 435 connected to the varistor 434 are provided inside the movable rod 431, the circuit board 435 is electrically connected to the control module, and a spring member 436 is provided between the varistor 434 and the contact probe 433. It can be understood that when the output shaft of the eccentric motor 432 rotates, it moves back and forth in the waist-shaped hole 437, thereby driving the movable rod 431 to move up and down along the perforation 121. The contact probe 433 is slightly lower than the ice-making height line 101 under the action of the spring member 436. When the contact probe 433 contacts the crushed ice or ice water, the spring member 436 cannot produce enough compression, thereby failing to reach the preset resistance value of the varistor 434 and triggering the control module to control the refrigeration module 200 to stop working.

[0049] The present invention also discloses an ice-making machine, including an ice-making control system of any of the above technical solutions. The ice-making machine uses a stirring assembly 300 to discharge bubbles in water, so that ice cubes are crystal clear, and uses a detection unit to detect whether the height position of the ice cubes reaches the ice-making height line 101. When the ice-making height line 101 is reached, the control module controls the refrigeration module 200 to stop working, thereby obtaining ice cubes with higher size accuracy.

[0050] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Although the 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 claims and their equivalents.

Claims

1. An ice making control system, characterized in that: include: An ice-making container (100), the ice-making container (100) having a storage cavity (110) opening upward, the ice-making container (100) being provided with a cover (120) for opening or closing the opening of the storage cavity (110), the storage cavity (110) having an ice-making height line (101) located below the opening thereof, the outer bottom of the ice-making container (100) being in contact with a refrigeration module (200), the ice-making container (100) or the cover (120) being provided with a stirring assembly (300) located above the ice-making height line (101) and a detection unit for detecting whether the height position of ice cubes reaches the ice-making height line (101), the detection unit and the refrigeration module (200) being electrically connected to a control module.

2. An ice making control system according to claim 1, characterized in that: The detection unit comprises an ultrasonic probe (410) arranged on the wall surface of the cover (120) facing the opening of the storage chamber (110), the transmitting end of the ultrasonic probe (410) being used to transmit ultrasonic waves downward, and the receiving end of the ultrasonic probe (410) being capable of receiving ultrasonic information fed back from the real ice interface (111) and the crushed ice interface (112) to determine whether the height of the ice cubes reaches the ice making height line (101).

3. An ice making control system according to claim 2, characterized in that: The receiving end of the ultrasonic probe (410) is connected to an oscilloscope, and an identification module electrically connected to the control module is provided in the oscilloscope. The oscilloscope is used to receive an echo spectrum reflected by an ultrasonic wave, and the identification module can identify a first reflected wave reflected from the crushed ice interface (112) and a second reflected wave reflected from the real ice interface (111) in the echo spectrum. The receiving end of the ultrasonic probe (410) can respectively detect a reflection time t1 of the first reflected wave and a reflection time t2 of the second reflected wave, and the control module can calculate a distance h1 between the receiving end of the ultrasonic probe (410) and the real ice interface (111) based on t1 and t2.

4. An ice making control system according to claim 2, characterized in that: The cover body (120) is provided with an acoustic resistor electrically connected to the control module, the acoustic resistor is used to sense a first reflected wave reflected from the crushed ice interface (112) and a second reflected wave reflected from the real ice interface (111), the control module respectively detects a reflection time t1 of the first reflected wave and a reflection time t2 of the second reflected wave, and calculates a distance h1 between a receiving end of the ultrasonic probe (410) and the real ice interface (111) based on t1 and t2.

5. An ice making control system according to claim 3 or 4, characterized in that: The speed at which the first reflected wave propagates in water is V1, the speed at which the second reflected wave propagates in water is V2, the speed at which the second reflected wave propagates in crushed ice is V3, the distance between the receiving end of the ultrasonic probe (410) and the crushed ice interface (112) is S1=V1*t1, the time duration for the second reflected wave to propagate in water is t3=S1 / V2, then the time duration for the second reflected wave to propagate in crushed ice is t4=t2-t3, the distance between the crushed ice interface (112) and the real ice interface (111) is S2=V3*t4, h1=S1+S2, the height distance between the ice-making height line (101) and the receiving end of the ultrasonic probe (410) is h, and when h1 is close to or equal to h, the control module controls the refrigeration module (200) to stop working.

6. An ice making control system according to claim 1, characterized in that: The storage chamber (110) is provided with a water level scale line (102) located above the ice-making height line (101); the stirring assembly (300) comprises an impeller rotatably arranged on a wall surface of the cover body (120) facing the opening of the storage chamber (110) and a motor driving the impeller to rotate; when the cover body (120) closes the opening of the storage chamber (110), the impeller is located between the water level scale line (102) and the ice-making height line (101) to drive the water located above the ice-making height line (101) to circulate.

7. An ice making control system according to claim 1, characterized in that: The detection unit comprises a temperature sensing probe (420) arranged on a wall surface of the cover (120) opening toward the storage cavity (110); when the cover (120) closes the opening of the storage cavity (110), a sensing end of the temperature sensing probe (420) is flush with the height of the ice making height line (101).

8. An ice making control system according to claim 1, characterized in that: The detection unit comprises a movable rod (431) which is telescopically arranged in a direction perpendicular to the cover body (120), the movable rod (431) being connected to a driver for driving the movable rod to reciprocate and telescopic motion, and a pressure detection unit is arranged at one end of the movable rod (431) which is extended from the storage chamber (110), the pressure detection unit having a contact component which extends to a position corresponding to the ice-making height line (101), and when the pressure detection unit reaches a preset pressure value, it is determined that the height position of the ice cube reaches the ice-making height line (101).

9. An ice making control system according to claim 8, characterized in that: The driver comprises an eccentric motor (432); the cover body (120) is provided with a through hole (121) perpendicular to the thickness direction thereof for the movable rod (431) to be telescopically moved; the movable rod (431) is provided with a waist-shaped hole (437) orthogonal to the length direction of the movable rod (431) at one end close to the eccentric motor (432); the output shaft of the eccentric motor (432) is passed through the waist-shaped hole (437); the contact component is a contact probe (433) telescopically arranged at one end of the movable rod (431) away from the eccentric motor (432); a varistor (434) and a circuit board (435) connected to the varistor (434) are arranged inside the movable rod (431); the circuit board (435) is electrically connected to the control module; a spring member (436) is arranged between the varistor (434) and the contact probe (433).

10. An ice making machine, characterized in that: The invention comprises an ice making control system according to any one of claims 1 to 9.

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