Ice making control system and ice maker
By combining the refrigeration module and stirring assembly of the ice-making control system with the ultrasonic probe detection unit, the problems of inaccurate ice block size and opacity in existing ice makers have been solved, achieving high-precision and transparent ice block preparation.
Patent Information
- Application Number
- CN202520435742.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Existing ice makers have difficulty precisely controlling the size of ice cubes, and the ice cubes they produce are not crystal clear and contain air bubbles.
An ice-making control system is adopted, which uses a refrigeration module to conduct cold energy, combined with a stirring component to agitate air bubbles in the water, and uses detection units such as ultrasonic probes or temperature probes to detect the height of ice blocks in real time, and controls the refrigeration module to stop working to form ice blocks of precise size.
It achieves high dimensional accuracy and a crystal-clear effect for ice cubes, and precisely controls the height of the ice cubes through a detection unit to avoid the formation of air bubbles.
Smart Images
Figure CN223814823U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an ice making control system and ice maker. BACKGROUND
[0002] The ice maker is a kind of refrigeration mechanical equipment that generates ice block after the water in container is cooled by refrigeration system.Currently, in order to meet the preferences of consumers, some beverage stores, dessert shops and bars and other consumer places on the market will use molds to form ice blocks of corresponding shapes.
[0003] In the prior art, if ice blocks with relatively accurate shape and size are needed, it needs to be tested for many times to pour a certain amount of water according to the expansion of ice blocks, which brings trouble to actual use, and the shape and size precision of ice blocks are also low.
[0004] In addition, the ice blocks made by conventional ice making devices are not crystal clear, because there are a large number of air bubbles in the ice blocks. INVENTION CONTENTS
[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide an ice making control system capable of controlling the size precision of ice blocks and making crystal clear ice blocks; and the second purpose is to provide an ice maker using the above-mentioned ice making control system.
[0006] According to the ice making control system of the first aspect of the utility model, the ice making container has an opening upward storage cavity, the ice making container is provided with a cover for opening or closing the opening of the storage cavity, the storage cavity has an ice making height line below the opening, the outer bottom of the ice making container is in contact with a refrigeration module, the ice making container or the cover is provided with a stirring assembly above the ice making height line and a detection unit for detecting whether the height position of ice block reaches the ice making height line, and the detection unit and the refrigeration module are electrically connected with a control module.
[0007] The ice making control system according to the utility model has at least the following beneficial effects:
[0008] The ice making control system of the above structure conducts cold quantity to the bottom of the ice making container by the refrigeration module, the water in the storage cavity is cooled and solidified into ice block from bottom to top, in this process, the stirring assembly continuously stirs the water above the ice making height line to discharge the air bubbles in the water, so that the finished ice block is crystal clear, and the detection unit continuously detects whether the height position of ice block reaches the ice making height line, when the ice making height line is reached, the refrigeration module is stopped by the control module, so that ice block with high size precision is obtained.
[0009] In some embodiments of the utility model, the detection unit includes ultrasonic probe arranged on the wall of the opening of the cover body towards the storage cavity, the transmitting end of the ultrasonic probe is used for transmitting ultrasonic wave downward, the receiving end of the ultrasonic probe can receive the information of ultrasonic wave feedback from the ice interface and the broken ice interface to judge whether the height of ice block reaches the ice making height line.
[0010] In some embodiments of the utility model, the receiving end of the ultrasonic probe is connected with an oscilloscope, the oscilloscope is provided with an identification module electrically connected with the control module, the oscilloscope is used for receiving echo spectrum of ultrasonic wave reflection, the identification module can identify first reflection wave reflected from the broken ice interface and second reflection wave reflected from the ice interface in the echo spectrum, the receiving end of the ultrasonic probe can detect reflection time t1 of the first reflection wave and reflection time t2 of the second reflection wave respectively, and the control module can calculate distance h1 between the receiving end of the ultrasonic probe and the ice interface according to t1 and t2.
[0011] In some embodiments of the utility model, the cover body is provided with sound-sensitive resistance electrically connected with the control module, the sound-sensitive resistance is used for sensing first reflection wave reflected from the broken ice interface and second reflection wave reflected from the ice interface, the control module detects reflection time t1 of the first reflection wave, reflection time t2 of the second reflection wave and calculates distance h1 between the receiving end of the ultrasonic probe and the ice interface according to t1 and t2.
[0012] In some embodiments of the utility model, the speed of the first reflection wave propagation in water is V1, the speed of the second reflection wave propagation in water is V2, the speed of the second reflection wave propagation in broken ice is V3, the distance between the receiving end of the ultrasonic probe and the broken ice interface is S1=V1*t1, the time length of the second reflection wave propagation in water is t3=S1 / V2, then the time length of the second reflection wave propagation in broken ice is t4=t2-t3, the distance between the broken ice interface and the 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, when h1 approaches or equals h, the control module controls the refrigeration module to stop working.
[0013] In some embodiments of the utility model, the storage cavity is provided with a water level scale line above the ice making height line, the stirring assembly comprises an impeller rotatably arranged on the wall surface of the cover body towards the opening of the storage cavity and a motor for driving the rotation of the impeller, and when the cover body closes the opening of the storage cavity, the impeller is located between the water level scale line and the ice making height line to drive the water above the ice making height line to circulate and flow.
[0014] In some embodiments of the utility model, the detection unit comprises a temperature sensing probe arranged on the wall surface of the cover body towards the opening of 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 utility model, the detection unit comprises a movable rod telescopically arranged along a direction perpendicular to the cover body, the movable rod is connected with a driver for driving the reciprocating telescopic movement of the movable rod, one end of the movable rod telescopically arranged in the storage cavity is provided with a pressure detection unit, the pressure detection unit has a contact component extending to a position corresponding to the ice making height line, and when the pressure detection unit reaches a preset pressure value, it is determined that the height position of the ice block reaches the ice making height line.
[0016] In some embodiments of the utility model, the driver comprises an eccentric motor, the cover body is vertically provided with a through hole for the telescopic movement of the movable rod, one 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 telescopically arranged in the waist-shaped hole, the contact component is a contact probe telescopically arranged at one end of the movable rod away from the eccentric motor, the inside of the movable rod is provided with a pressure sensitive resistor and a circuit board connected with the pressure sensitive resistor, the circuit board is electrically connected with the control module, and a spring member is arranged between the pressure sensitive resistor and the contact probe.
[0017] According to the second aspect of the utility model, an ice maker comprises the ice making control system of any one of the above technical solutions. The ice maker is provided with a refrigeration module for conducting cold energy to the bottom of an ice making container, water in the storage cavity is cooled from bottom to top to gradually solidify into ice blocks, in this process, the stirring assembly continuously stirs the water above the ice making height line to discharge air bubbles in the water, so that the finished ice blocks are crystal clear, and the detection unit continuously detects whether the height position of the ice blocks reaches the ice making height line, and when the ice making height line is reached, the control module controls the refrigeration module to stop working, so that ice blocks with high size precision are obtained.
[0018] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Figure 1 This is a schematic diagram of the structure of a first embodiment of the ice-making control system of this utility model;
[0021] Figure 2 yes Figure 1 A cross-sectional schematic diagram of the cover when it is closed in the embodiment;
[0022] Figure 3 This is a schematic diagram of the structure of a second embodiment of the ice-making control system of this utility model;
[0023] Figure 4 This is a schematic diagram of the ice-making control system during the formation of water, crushed ice, and solid ice.
[0024] Figure 5 This is a schematic diagram of the cover portion of a third embodiment of the ice-making control system of this utility model;
[0025] Figure 6 This is a cross-sectional schematic diagram of a third embodiment of the ice-making control system of this utility model;
[0026] Figure 7 This is a schematic diagram of the agitator driving the water flow.
[0027] Figure label:
[0028] Ice-making container 100; storage chamber 110; solid ice interface 111; crushed ice interface 112; lid 120; perforation 121; ice-making height line 101; water level scale line 102; refrigeration module 200; stirring assembly 300; ultrasonic probe 410; temperature probe 420; moving rod 431; eccentric motor 432; contact probe 433; varistor 434; circuit board 435; spring component 436; oblong hole 437. Detailed Implementation
[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0030] In the description of the utility model, need understanding is, if the direction description is related to, for example the term "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the direction or position relation indicated by the drawing is shown the direction or position relation, is only for the convenience of describing the utility model and simplifying the description, and is not the device or element indicated or implied must have a particular direction, with a particular direction structure and operation, therefore can not be understood as the restriction of the utility model.
[0031] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If the first, second is described, it is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0032] In the description of the utility model, it needs to be explained that, unless otherwise expressly provided and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or integrally connected;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements inside.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0033] Referring to Figures 1 to 7 The utility model discloses a kind of ice making control systems, comprising: ice making container 100, the ice making container 100 has storage cavity 110 with opening upward, the ice making container 100 is equipped with the cover 120 for opening or closing the opening of the storage cavity 110, the storage cavity 110 has ice making height line 101 located below its opening, the outer bottom of the ice making container 100 contacts refrigeration module 200, the ice making container 100 or the cover 120 is equipped with stirring assembly 300 located above the ice making height line 101 and detection unit for detecting whether the height position of ice block reaches the ice making height line 101, the detection unit, refrigeration module 200 are electrically connected with control module.
[0034] The ice making control system of the above structure conducts cold energy from the refrigeration module 200 to the bottom of the ice making container 100, and the water in the storage cavity 110 is cooled from bottom to top to solidify into ice cubes. In this process, the stirring assembly 300 continuously stirs the water above the ice making height line 101 to remove air bubbles in the water, so that the finished ice cubes are crystal clear. The detection unit continuously detects whether the height position of the ice cubes reaches the ice making height line 101, and 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 high size accuracy.
[0035] It should be noted that for a household ice maker, in order to achieve miniaturization, the refrigeration module 200 generally uses a semiconductor refrigeration chip to exchange heat with the ice making container 100. In this embodiment, the semiconductor refrigeration chip is installed at the bottom of the ice making container 100, the cold end of the semiconductor refrigeration chip is attached to the outer bottom surface of the ice making container 100, and the hot end of the semiconductor refrigeration chip contacts an aluminum heat exchanger. The fan blows away the heat on the heat exchanger to achieve heat exchange. Specifically, the heat exchanger has a plurality of parallel arranged fins, the suction end of the fan faces downward, and the exhaust end faces upward. The fan blows external air between the fins and then exhausts it outward along the two ends of the fins.
[0036] Referring to Figure 1 , Figure 2 and Figure 4 In some embodiments of the present application, the detection unit includes an ultrasonic probe 410 provided on the wall surface of the cover 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 the information of the ultrasonic waves fed back from the 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 of water in the storage cavity 110 being cooled and gradually solidified into ice blocks from bottom to top, the upper surface of the ice block entity is a solid ice interface 111, and the part above the solid ice interface 111 can not only have water, but also can have ice fragments between the water and the solid ice interface 111, and most of the ice fragments exist in a solid-liquid mixed state, and the interface between the water and the ice fragments constitutes an ice fragment interface 112, because part of the water has a temperature below zero degrees, but the forming time is short, and the water exists in the form of thin ice or ice fragments without being completely frozen into solid ice. If only a conventional ultrasonic detection means is used for detection, part of the sound waves is reflected at the ice fragment interface 112, and part of the sound waves is reflected at the solid ice interface 111, so that accurate height data of the solid ice interface 111 cannot be obtained, and misjudgment is extremely easy. The ice making control system can obtain the information of the ultrasonic waves reflected from the solid ice interface 111 and the ice fragment interface 112, and the obtained information of the ultrasonic waves is not limited to reflection time, frequency spectrum data, sound wave intensity and the like, so as to determine whether the solid ice interface 111 reaches the ice making height line 101.
[0038] In some embodiments of the utility model, the receiving end of ultrasonic probe 410 is connected with an oscilloscope, the oscilloscope is equipped with an identification module electrically connected with the control module, the oscilloscope is used for receiving echo spectrum of ultrasonic reflection, the identification module can identify first reflected wave reflected from ice fragment interface 112 and second reflected wave reflected from solid ice interface 111 in echo spectrum, the receiving end of ultrasonic probe 410 can detect reflection time t1 of first reflected wave and reflection time t2 of second reflected wave respectively, the control module can calculate distance h1 between the receiving end of ultrasonic probe 410 and solid ice interface 111 according to t1 and t2. It should be noted that when high-frequency sound waves pass through water, ice fragments and solid ice, water and ice fragments have a smaller weakening effect on high-frequency sound waves, but solid ice can absorb a large amount of high-frequency sound waves, so the frequency of second reflected wave reflected from solid ice interface 111 is higher than the frequency of first reflected wave reflected from ice fragment interface 112. This is because there is a large difference in acoustic impedance between water and ice, which causes strong reflection of ultrasonic waves at the interface between water and ice. Specifically, the acoustic impedance of water: Z_{water}≈1.48 times 10^6, kg / (m 2 ·s), the acoustic impedance of ice: Z_{ice}≈3.6 times 10^6, kg / (m 2 ·s), the reflection coefficient of sound waves: R=frac{Z_{ice}-Z_{water}} / {Z_{ice}+Z_{water}}≈0.42, that is, about 42% of ultrasonic wave energy is reflected, which forms obvious regular echo.
[0039] For example, when the ultrasonic probe 410 is located below the water surface and above the ice surface, the user pre-shoots the ultrasonic wave with fixed parameters towards the ice surface after complete freezing to obtain a first standard spectrum diagram of the ultrasonic wave reflected by the solid ice surface, and shoots the ultrasonic wave with fixed parameters towards the ice interface 112 between the water and the broken ice to obtain a second standard spectrum diagram of the ultrasonic wave reflected by the ice interface 112. The first standard spectrum diagram and the second standard spectrum diagram are pre-set in the program of the control module. The waveform of the actual real-time reflected echo spectrum is compared with the 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 echo waveform reflected by the solid ice surface is usually a regular sine wave, and the amplitude peak, trough, wavelength, frequency, phase and period of the sound wave are regular fixed values. If the waveform of the actual real-time reflected echo spectrum of the ultrasonic wave is a regular sine wave, and all the values are consistent with the standard values set in the program, it is determined that the reflection surface is the solid ice surface, and the sound wave is the second reflected wave. If the waveform of the actual real-time reflected echo spectrum of the ultrasonic wave is irregular and chaotic, it is determined that the reflection surface is the broken ice or ice sheet, and the sound wave is the first reflected wave. For example, when the ultrasonic probe 410 is located below the water surface and above the ice surface, the propagation speed of the first reflected wave in the water can be measured in advance as a constant for calculation. On the premise of obtaining the reflection time t1 of the first reflected wave, the water depth between the ultrasonic probe 410 and the broken ice layer can be obtained. The propagation speed of the second reflected wave in the water and the propagation speed of the second reflected wave in the broken ice can also be measured in advance as a constant for calculation. The thickness of the broken ice layer can be calculated in combination with the reflection time t2 of the second reflected wave. The thickness of the broken ice layer is superimposed on the water depth between the ultrasonic probe 410 and the broken ice layer to obtain the height of the ultrasonic probe 410 to the ice interface 111. Finally, it is determined whether the ice interface 111 coincides with the ice making height line 101.
[0041] Of course, it can be imagined that when the ultrasonic probe 410 is located above the water surface, the propagation time of the first reflected wave and the second reflected wave in the air also needs to be measured, and the above measurement method is used to accurately measure the height position of the ice interface 111.
[0042] In some embodiments of the utility model, the cover 120 is equipped with the sound -sensitive resistance which is electrically connected with the control module, the sound -sensitive resistance is used to induct the first reflection wave reflected from the ice crushing interface 112 and the second reflection wave reflected from the real ice interface 111, the control module detects the reflection time t1 of first reflection wave, the reflection time t2 of second reflection wave respectively, and according to t1, t2, the distance h1 between the receiving end of ultrasonic probe 410 and real ice interface 111 is measured. It can be understood that the sound -sensitive resistance can identify the reflection wave of different sound intensity, and the sound -sensitive resistance feeds back electric signal to the control module, and the control module is equipped with the first reflection wave corresponding standard data and the second reflection wave corresponding standard data in advance, so that the first reflection wave and the second reflection wave are identified by sound intensity respectively, then the above-mentioned measurement method is referred to: taking the ultrasonic probe 410 below the water surface and above the ice surface as an example, since the first reflection wave only passes through water, the propagation speed of the first reflection wave in water can be measured in advance as a constant, under the premise of obtaining the reflection time t1 of the first reflection wave, the water depth size between the ultrasonic probe 410 and the ice crushing layer can be obtained, the second reflection wave passes through water and ice crushing, and the propagation speed of the second reflection wave in water and the propagation speed of the second reflection wave in ice crushing can also be measured in advance as a constant, so that the thickness size of the ice crushing layer can be calculated in cooperation with the reflection time t2 of the second reflection wave, the thickness size of the ice crushing layer is superimposed with the water depth size between the ultrasonic probe 410 and the ice crushing layer, and the height size of the ultrasonic probe 410 to the real ice interface 111 can be obtained, and finally whether the real ice interface 111 reaches the height position of the ice making height line 101 is determined.
[0043] In some embodiments of the utility model, the first reflected wave propagates in water at a speed V1, the second reflected wave propagates in water at a speed V2, the second reflected wave propagates in broken ice at a speed V3, the distance between the receiving end of the ultrasonic probe 410 and the broken 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 broken ice is t4=t2-t3, the distance between the broken 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, when h1 approaches or equals h, the control module controls the refrigeration module 200 to stop working. It can be understood that V1, V2, V3 can be determined in advance by testing, the receiving end of the ultrasonic probe 410 directly obtains t1 and t2, the distance S1 between the receiving end of the ultrasonic probe 410 and the broken ice interface 112 is calculated, then the time length t3 of the second reflected wave propagating in water and the time length t4 of the second reflected wave propagating in broken ice are calculated, thereby the distance h1 between the receiving end of the ultrasonic probe 410 and the real ice interface 111 is obtained, 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, whether the real ice interface 111 reaches the height position of the ice making height line 101 can be known.
[0044] Of course, in other embodiments, after h1 is obtained by the above calculation method, the height size of the ice block can also 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, thereby directly compared with the size of the ice making scale line, without conversion, more intuitive.
[0045] Referring to Figure 1 , Figure 2 and Figure 7In some embodiments of the utility model, water level scale line 102 above ice making height line 101 is arranged in storage cavity 110, stirring assembly 300 includes impeller rotating on the wall surface of opening of cover 120 towards storage cavity 110 and motor driving impeller to rotate, when cover 120 closes the opening of storage cavity 110, impeller is located between water level scale line 102 and ice making height line 101 to drive the water above ice making height line 101 to circulate. It needs to be explained that user pours water into storage cavity 110 before ice making, water level needs to cross ice making height line 101 and not higher than water level scale line 102, water level scale line 102 only limits the highest position of water level, thereby reserving the height space of ice block expansion. Motor drives impeller to rotate, impeller stirs the water above water level scale line 102 to circulate, thereby preventing bubble generation in the ice making process, and it is beneficial to form ice block with higher transparency.
[0046] Referring to Figure 3 In some embodiments of the utility model, temperature sensing probe 420 is arranged on the wall surface of opening of cover 120 towards storage cavity 110, when cover 120 closes the opening of storage cavity 110, the sensing end of temperature sensing probe 420 is flush with the height of ice making height line 101. It can be understood that when ice interface 111 gradually rises to ice making height line 101, temperature sensing probe 420 senses that the temperature reaches the temperature of ice, such as-2 DEG C to-1 DEG C, if temperature sensing probe 420 contacts water, then the temperature is generally not lower than 0 DEG C. Temperature sensing probe 420 can be used together with the above-mentioned ultrasonic probe 410, which is beneficial to further improve the accuracy of measurement.
[0047] Referring to Figure 5 And Figure 6In some embodiments of the utility model, the detection unit includes the movable rod 431 which is arranged in extension along the direction perpendicular to the cover 120, the movable rod 431 is connected with the driver which drives its reciprocating extension movement, one end of the movable rod 431 which extends in the storage cavity 110 is provided with the pressure detection unit, the pressure detection unit has the contact component which extends to the position corresponding to the ice making height line 101, when the pressure detection unit reaches the preset pressure value, the height position of ice block is determined to reach the ice making height line 101. It needs to be explained that the freezing mode when icing is wrapped, through test, when the travel switch is adopted with the inductive end flush with the ice making height line 101, it cannot produce an upward lifting force to touch the travel switch. The driver of the above structure detection unit continuously drives the movable rod 431 to reciprocate up and down during the ice making process, when the contact component contacts the solid ice surface, it can reach the preset pressure value, thereby determining that the height position of ice block reaches the position of the ice making height line 101, on the contrary, if the pressure detection unit contacts water or broken ice, the pressure sensed by the pressure detection unit does not reach the preset pressure value, thereby determining that the refrigeration module 200 still needs to continue to work.
[0048] Referring to Figure 5 And Figure 6 In some embodiments of the utility model, the driver includes the eccentric motor 432, the cover 120 is provided with the perforation 121 for the extension movement of the movable rod 431 in the thickness direction perpendicular to the cover 120, one end of the movable rod 431 close to the eccentric motor 432 is provided with the waist-shaped hole 437 which is orthogonal to the length direction of the movable rod 431, the output shaft of the eccentric motor 432 is arranged in the waist-shaped hole 437, the contact component is the contact probe 433 which is arranged in extension at one end of the movable rod 431 away from the eccentric motor 432, the inside of the movable rod 431 is provided with the piezoresistor 434 and the circuit board 435 connected with the piezoresistor 434, the circuit board 435 is electrically connected with the control module, the piezoresistor 434 and the contact probe 433 are provided with the spring piece 436. It can be understood that when the output shaft of the eccentric motor 432 rotates and reciprocates in the waist-shaped hole 437, the movable rod 431 is driven to extend 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 piece 436, when the contact probe 433 contacts broken ice or ice water, the spring piece 436 cannot produce enough compression amount, thereby the piezoresistor 434 cannot reach the preset resistance value to trigger the control module to control the refrigeration module 200 to stop working.
[0049] The utility model discloses still disclose a kind of ice machines, including the ice making control system of any above technical solution. The ice machine utilizes stirring assembly 300 to discharge the bubble in water, so that ice block is crystal clear, utilize detection unit to detect the height position of ice block whether reach ice making height line 101, when reach ice making height line 101, by control module control refrigeration module 200 stop working, to obtain the ice block of higher dimensional accuracy.
[0050] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.
[0051] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.
Claims
1. An ice-making control system, characterized in that, include: An ice-making container (100) has an upward-opening storage cavity (110) and 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 its opening. A refrigeration module (200) is in contact with the outer bottom of the ice-making container (100). 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 of the ice cubes has reached the ice-making height line (101). The detection unit and the refrigeration module (200) are both electrically connected to a control module.
2. The ice-making control system according to claim 1, characterized in that: The detection unit includes an ultrasonic probe (410) disposed on the wall surface of the cover (120) facing the opening of the storage cavity (110). The transmitting end of the ultrasonic probe (410) is used to emit ultrasonic waves downwards, and the receiving end of the ultrasonic probe (410) can receive the information of the ultrasonic waves fed back from the solid ice interface (111) and the crushed ice interface (112) to determine whether the height of the ice block has reached the ice-making height line (101).
3. The ice-making control system according to claim 2, characterized in that: The receiving end of the ultrasonic probe (410) is connected to an oscilloscope. The oscilloscope contains an identification module electrically connected to the control module. The oscilloscope is used to receive the echo spectrum of the ultrasonic waves reflected back. The identification module can identify the first reflected wave reflected from the broken ice interface (112) and the second reflected wave reflected from the solid 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. The control module can calculate the distance h1 between the receiving end of the ultrasonic probe (410) and the solid ice interface (111) based on t1 and t2.
4. An ice-making control system according to claim 2, characterized in that: The cover (120) is provided with an acoustic resistor electrically connected to the control module. The acoustic resistor is used to sense the first reflected wave reflected from the broken ice interface (112) and the second reflected wave reflected from the solid ice interface (111). The control module detects the reflection time t1 of the first reflected wave, 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 solid 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 the broken ice is V3, the distance between the receiving end of the ultrasonic probe (410) and the broken ice interface (112) is S1 = V1 * t1, the duration of the second reflected wave propagating in water is t3 = S1 / V2, the duration of the second reflected wave propagating in the broken ice is t4 = t2 - t3, the distance between the broken ice interface (112) and the solid 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, when h1 is close to or equal to h, the control module controls the cooling 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) includes an impeller rotatably disposed on the wall surface of the cover (120) facing the opening of the storage chamber (110) and a motor that drives the impeller to rotate. When the cover (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 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 includes a temperature-sensing probe (420) disposed on the wall surface 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).
8. An ice-making control system according to claim 1, characterized in that: The detection unit includes a movable rod (431) that extends and retracts along a direction perpendicular to the cover (120). The movable rod (431) is connected to a driver that drives its reciprocating extension and retraction. A pressure detection unit is provided at one end of the movable rod (431) that extends into the storage cavity (110). 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 of the ice block has reached the ice-making height line (101).
9. An ice-making control system according to claim 8, characterized in that: The driver includes an eccentric motor (432). The cover (120) has a through hole (121) perpendicular to its thickness direction for the telescopic movement of the movable rod (431). The end of the movable rod (431) near the eccentric motor (432) has an oblong hole (437) orthogonal to the length direction of the movable rod (431). The output shaft of the eccentric motor (432) passes through the oblong hole (437). The contact component is a contact probe (433) telescopically located at the end of the movable rod (431) away from the eccentric motor (432). The movable rod (431) has a varistor (434) and a circuit board (435) connected to the varistor (434). The circuit board (435) is electrically connected to the control module. A spring (436) is provided between the varistor (434) and the contact probe (433).
10. An ice maker, characterized in that, Including the ice-making control system according to any one of claims 1-9.