Ice maker

Abstract

The utility model relates to an ice maker, and aims to solve the technical problems of low ice-making energy efficiency, difficulty in accurately controlling ice-making time and non-uniform ice block size caused by neglect of water temperature control and low energy efficiency in the conventional like products. The ice maker is characterized in that the bottom and the inner side of a water tank in a machine body of the ice maker are provided with inner supports for separating the refrigerating system on one side of the bottom in the machine body, a pipeline for connecting a compressor and an evaporator of the refrigerating system is provided with a pressure sensor, the other pipeline is provided with a two-way electromagnetic valve, and a condenser is provided with a fan. Two ends of the capillary tube are respectively connected with the evaporator and the condenser, a pipeline on one side of the condenser of the capillary tube is provided with a drying filter, and a pipeline between the drying filter and the condenser is provided with an NTC temperature sensor; a rotating shaft extending out of the right support at one end of the ice-making box respectively triggers an upper limiting microswitch or a lower limiting microswitch fixed on the outer side of the right support at the side when swinging, and a water level sensor is arranged at a water inlet hole at a water pipe of the left support above the ice-making box.

Description

TECHNICAL FIELD

[0001] The utility model relates to a small -size ice maker, it is an ice maker. BACKGROUND

[0002] Ice maker is a kind of ice making refrigeration mechanical equipment by evaporator by refrigeration system refrigerant cooling, adopts refrigeration system, with water carrier, under the electrified condition, ice is made after passing through certain equipment. Among them, the working principle of small -size ice maker is mainly through the compression of refrigeration cycle, condensation, expansion and evaporation four steps, realizes ice making using the phase change of refrigerant, and the cycle of ice making and ice removal is completed by automatic control system;Water is frozen on the surface of evaporator when ice making, after reaching the set thickness, ice maker enters ice removal mode;Ice block is dropped from evaporator and falls into ice storage box by heating or stopping refrigeration when ice removal;And then circulate repeatedly, ice block in ice storage box gradually accumulates, for user use. The existing small -size ice maker product, such as the application number 201710222192.4 disclosed in Chinese patent document, application publication date 2017.06.13, invention name "automatic drainage's ice maker";Such as the application number 201920897236.8 disclosed in Chinese patent document, authorized announcement date 2020.04.03, invention name "a small -size ice maker";But the above small -size ice maker and similar products have the following problems: 1, control neglects water temperature: in control process, it is mainly to determine ice making time by temperature sensor feedback ambient temperature, so that a control mode neglects water temperature in control aspect is relatively rough, and it can lead to the ice block of each time is not uniform, such as the problem of the water temperature and the temperature of the whole machine are relatively high when the first time ice making is increased.2, energy efficiency is lower: when water temperature is lower, ice block is like a heat preservation layer, and heat transfer is more difficult as ice block is thicker, so as to control the thickness of ice block in reasonable range to improve refrigeration efficiency. SUMMARY

[0003] To overcome the above shortcomings, the utility model aims at providing an ice maker to the field, so that it solves the technical problems that the existing similar products exist control neglects water temperature and energy efficiency is lower, thereby leading to lower ice making energy efficiency, it is more difficult to accurately control ice making time, and the size of ice block is not uniform each time. Its purpose is realized through the following technical solutions.

[0004] The application discloses an ice maker, which is characterized in that the body of the ice maker is internally provided with a refrigeration system, a water system and a moving mechanism; the refrigeration system comprises an evaporator, a compressor, a pressure sensor, an NTC temperature sensor, a capillary, a double-way electromagnetic valve and a condenser; the top of the body is provided with an ice making box below the evaporator fixed on one side of the body and supported on the other side; the ice cubes obtained by the ice making in the ice making box are transported to the ice basket on the other side of the top of the body by the oscillation of the synchronous motor on one side of the ice making box; the water in the ice basket is returned to the water tank through the water draining hole of the ice basket; the water tank is circulated to the water inlet hole on the other side of the ice making box through the water outlet hole on one side of the bottom of the water tank, the water pump and the water pipe of the water system; the left support and the right support of the moving mechanism on one side of the water tank above the refrigeration system are fixedly arranged on the inner walls on both sides of the tank opening in the water tank; the moving mechanism is arranged below the water inlet hole of the water pipe of the water system; the water inlet hole of the water pipe is fixedly arranged on one side of the left support above the ice making box; the rotating shafts at both ends of the ice making box are respectively inserted into the shaft holes of the left support and the right support; the rotating shaft of the synchronous motor is arranged on one end of the ice making box and extends out of the left support; the flip cover for taking out the ice basket in the water tank is arranged on one side of the top of the body above the ice basket on the other side in the water tank; the cover plate with a control panel is arranged on the other side of the top of the body; the bottom of the body is provided with a base; and the filter cover is arranged at the water outlet hole in the water tank. The structural design points of the ice maker are that the inner support for separating the refrigeration system on one side of the bottom of the body is arranged on the inner wall of the base and the body and the bottom and the inner side of the water tank; the inner support is fixedly arranged on the inner wall of the base, the body and the water tank; the base, the body, the water tank and the inner support are integrated; the pipeline connecting the compressor and the evaporator of the refrigeration system is provided with the pressure sensor; the other pipeline connecting the compressor, the evaporator and the condenser is provided with the double-way electromagnetic valve; the condenser is provided with the fan on one side; the two ends of the capillary are respectively connected with the evaporator and the condenser; the pipeline on one side of the condenser of the capillary is provided with the drying filter; the pipeline between the drying filter and the condenser is provided with the NTC temperature sensor; the rotating shaft of the other end of the ice making box extending out of the right support triggers the upper limit micro switch or the lower limit micro switch fixed on the outer side of the right support when the ice making box oscillates; the lower limit micro switch, the upper limit micro switch, the fan, the capillary, the compressor, the evaporator, the condenser, the NTC temperature sensor, the pressure sensor, the double-way electromagnetic valve, the synchronous motor and the water pump are connected with the control panel in the cover plate through the lines; the water pump is fixedly arranged on the inner support; and the compressor and the condenser are fixedly arranged on the base. Therefore, the ice size can be accurately judged to meet the ice making requirements by the pressure sensor, the corresponding NTC temperature sensor and the water level sensor and the cooperation control of the corresponding components; and the ice making box is a U-shaped groove plate.

[0005] The water inlet hole of the left support is provided with a water level sensor, the water level sensor is in L shape, the head of the water level probe at one end of the water level sensor penetrates the convex edge of the left support and is located in front of the water inlet hole, the ring at the other end of the water level sensor is fixed to the mounting hole of the left support through a wiring gasket and a screw, and the water level sensor is connected to the control panel in the cover plate through a line.

[0006] The NTC temperature sensor is arranged on the metal strip at the side end corner of the compressor of the refrigeration system in the machine body, the two ends of the metal strip are fixed to the inner support and the base respectively, and the NTC temperature sensor is close to the pipeline between the drying filter and the condenser.

[0007] The other end of the ice making box extends out of the pivot of the right support and is provided with a crank, the pivot of the ice making box is triggered by the convex end of the crank to abut against the upper limit micro switch arranged on the right support, the lower limit micro switch is arranged below the right support corresponding to the upper limit micro switch, the crank is disconnected from the upper limit micro switch and triggers the lower limit micro switch after the ice making box swings, and the moving spring sheet of the upper limit micro switch and the moving spring sheet of the lower limit micro switch are arranged at a 90-degree included angle.

[0008] The groove in the ice making box is in U shape, the positioning groove on the left support above the pivot of the ice making box is provided with a limiting block, the limiting block limits the swing position of the slot of the ice making box, and one end of the coiled pipe of the evaporator above the ice making box is fixed through the L-shaped plate, and the ice basket of the ice making box is provided with a hinged swing guide plate on the side slot edge.

[0009] One side of the inner bottom of the water tank is provided with a drain hole, the drain hole is provided with a water plug, and the base below the drain hole is provided with a through hole for placing the water plug.

[0010] The ice maker has the advantages of reasonable structure design, convenient production and assembly, accurate water temperature control and ice making time control, high energy efficiency, fast ice making, uniform ice block size, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is an embodiment of the utility model three-dimensional structure schematic diagram, the dotted line in the figure is the shell structure.

[0012] Figure 2 is Figure 1 the water tank and the inner support internal structure schematic diagram, the shell structure is omitted in the figure, and the dotted line is the water tank and the inner support.

[0013] Figure 3 is a side view structural schematic diagram of the application. Figure 2

[0014] Figure 4 is a side view structural schematic diagram of the application, the dotted line is the internal structure of the shell. Figure 1

[0015] Figure 5 is an exploded structural schematic diagram of the application, the body, the flip cover and the cover plate are omitted. Figure 1

[0016] Figure 6 is a side view structural schematic diagram of the application. Figure 5

[0017] Figure 7 is a refrigeration system structural schematic diagram of the application. Figure 2

[0018] Figure 8 is a waterway system and motion mechanism connecting structure schematic diagram of the application, the A part and the B part are framed. Figure 2 Figure 1

[0019] Figure 9 is an A part enlarged diagram of the application. Figure 8

[0020] Figure 10 is a B part enlarged diagram of the application. Figure 8

[0021] Figure 11 is a water level sensor enlarged structural schematic diagram of the application. Figure 8

[0022] Figure 12 is a waterway system and motion mechanism connecting structure schematic diagram of the application. Figure 2 Figure 2

[0023] Figure 13 is a circuit working principle structural schematic diagram of the application.

[0024] Figure 14 is a control method flow block structural schematic diagram of the application.

[0025] ​​​​​​​​​​​​Attached Figures and Their Names: 1. Body, 2. Flip-top, 3. Cover plate, 4. Base, 5. Water tank, 501. Water outlet, 502. Drain hole, 6. Ice basket, 7. Left support, 701. Limiting block, 8. Guide plate, 9. Right support, 10. Evaporator, 11. Ice maker, 12. Compressor, 13. Pressure sensor, 14. NTC temperature sensor, 15. Capillary tube, 16. Two-way solenoid valve, 17. Filter cover, 18. Condenser, 19. Fan, 20. Inner support, 21. Upper limit micro switch, 22. Lower limit micro switch, 23. Crank arm, 24. Water pipe, 25. Water pump, 26. Water level sensor, 27. Water inlet, 28. Synchronous motor. Implementation

[0026] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-13 As shown, the ice maker's body contains a refrigeration system, a water system, and a motion mechanism. The refrigeration system includes an evaporator 10, a compressor 12, a pressure sensor 13, an NTC temperature sensor 14, a capillary tube 15, a two-way solenoid valve 16, and a condenser 18. An ice-making box 11 is located on one side of the top of the body 1, below a water tank 5 and a fixed evaporator. Ice blocks made in the ice-making box are transported by a synchronous motor 28 on one side of the ice-making box to an ice basket 6 symmetrically located on the other side of the top of the body. Water in the ice basket above the water tank returns to the water tank through the drain hole in the ice basket. The water from the water tank returns to the ice-making box through a water outlet 501 on one side of the bottom of the water tank, a water pump 25, and a water pipe 24 in the water system. The water inlet 27 on one side of the top of the ice box is used for circulating ice making; the left support 7 and right support 9 of the motion mechanism inside the water tank on one side of the upper part of the refrigeration system are fixedly set on the inner walls on both sides of the tank opening. At the same time, the motion mechanism is set below the water inlet of the water pipe of the water system. The water inlet of the water pipe is fixedly set on one side of the left support above the ice box. The rotating shafts at both ends of the ice box are respectively inserted into the shaft holes of the left and right supports on both sides. The synchronous motor is set at one end of the ice box and extends out of the rotating shaft of the left support. On the other side of the ice basket inside the water tank, there is a flip cover 2 on the top of the machine body to remove the ice basket inside the water tank. On the other side of the top of the machine body, which is symmetrical to the flip cover, there is a cover plate 3 with a control panel. The bottom of the machine body is equipped with a base 4. A filter cover 17 is provided at the water outlet in the water tank.

[0027] The bottom and inner side of the water tank in the machine body are provided with an inner support 20 separating the refrigeration system on one side of the bottom of the machine body. The inner support is fixedly arranged on the inner wall of the base 4 and the machine body, and the bottom and inner side of the water tank. The base, the machine body, the water tank and the inner support are integrated. One pipeline connecting the compressor and the evaporator of the refrigeration system is provided with a pressure sensor 13. Another pipeline connecting the compressor, the evaporator and the condenser is provided with a double-way electromagnetic valve. One side of the condenser is provided with a fan 19. The two ends of the capillary tube 15 are respectively connected with the evaporator and the condenser. Meanwhile, the pipeline on the condenser side of the capillary tube is provided with a drying filter. The pipeline between the drying filter and the condenser is provided with an NTC temperature sensor 14. The other end of the ice-making box extends out of the rotating shaft of the right support. When the ice-making box swings, the upper limit micro switch 21 or the lower limit micro switch 22 fixed to the outer side of the right support on this side is triggered. The lower limit micro switch, the upper limit micro switch, the fan, the capillary tube, the compressor, the evaporator, the condenser, the NTC temperature sensor, the pressure sensor, the double-way electromagnetic valve, the synchronous motor and the water pump are connected with the control panel in the cover plate through a circuit. The water pump is fixedly arranged on the inner support. The compressor and the condenser are fixedly arranged on the base.

[0028] The water inlet hole of the water pipe of the left support is provided with a water level sensor 26. The water level sensor is in the shape of L. The head of the water level probe at one end of the water level sensor penetrates through the convex edge of the left support and is located in front of the water inlet hole. The ring at the other end of the water level sensor is fixed to the mounting hole of the left support through a wiring gasket and a screw. The water level sensor is connected with the control panel in the cover plate through a circuit. The NTC temperature sensor is arranged on the metal strip at the end corner of the compressor of the refrigeration system in the machine body. The two ends of the metal strip are respectively fixed to the inner support and the base. The NTC temperature sensor is close to the pipeline between the drying filter and the condenser. The rotating shaft of the other end of the ice-making box is provided with a crank arm 23. The rotating shaft of the ice-making box is triggered by the protrusion at one end of the crank arm and the upper limit micro switch arranged on the right support. The lower limit micro switch is arranged below the right support on the side corresponding to the upper limit micro switch. The crank arm disconnects the upper limit micro switch and triggers the lower limit micro switch after the ice-making box swings. The moving reed of the upper limit micro switch and the moving reed of the lower limit micro switch are arranged at an angle of 90 degrees.

[0029] The groove in the ice-making box is in the shape of U. The positioning groove on the left side of the upper left support of the rotating shaft of the ice-making box is provided with a limiting block 701. The limiting block limits the swing position of the slot of the ice-making box. The one end of the coiled pipe of the evaporator above the ice-making box is fixed by an L-shaped plate. The slot edge of one side of the ice basket of the ice-making box is provided with a hinged swing guide plate 8. One side of the inner bottom of the water tank is provided with a drain hole 502. The drain hole is provided with a water plug. The base below the drain hole is provided with a through hole for the water plug.

[0030] According to the structure and the working principle of the circuit, Figure 14As shown, when the pressure sensor detects a pressure in the pipeline greater than M Pa for L seconds, one round of ice making ends. The ice maker then flips downwards, and the dual-way solenoid valve switches channels for dehydration. After dehydration, the ice maker flips upwards. Simultaneously, once the ice maker is in its correct position, the water pump starts, initiating a new round of ice making. M Pa is an absolute pressure of 0.079 MPa, corresponding to a temperature of -18 degrees Celsius, and L seconds is 10 seconds. When the NTC temperature sensor detects a temperature greater than 42 degrees Celsius at the compressor and condenser, it reports a high temperature and the entire unit stops operating. If the water level sensor's probe does not detect water for more than 3 seconds, it reports a water shortage and the entire unit stops operating. Simultaneously, if the water level sensor's probe continuously detects water for N seconds, the water pump stops operating; N seconds is 27-30 seconds.

[0031] In summary, the compressor in this ice maker's refrigeration system provides power to compress the high-temperature refrigerant into the condenser. The condenser cools the refrigerant, and then a throttling device reduces the refrigerant pressure, causing it to evaporate. The evaporated, low-temperature refrigerant cools the evaporator, which in turn cools the water. This throttling device, through the coordinated operation of a pressure sensor, a water level sensor, and an NTC temperature sensor, controls the operation of the water pump, compressor, and condenser, thereby reducing energy consumption and improving energy efficiency. The water system uses a water pump to transport water from the water tank to the ice-making container. The motion mechanism, driven by a synchronous motor, transports the ice blocks to the ice basket after ice making, and the water in the ice basket returns to the water tank. The water pump then transports water from the water tank back to the ice-making container for the next round of ice making.

Claims

1. An ice maker, wherein the ice maker body is provided with a refrigeration system, a water circuit system and a motion mechanism, the refrigeration system including an evaporator (10), a compressor (12), a pressure sensor (13), an NTC temperature sensor (14), a capillary tube (15), a two-way solenoid valve (16) and a condenser (18), an ice box (11) is provided on the top side of the body (1) through a water tank (5) and below an evaporator supported and fixed on one side, the ice block obtained by the ice box of the motion mechanism is swung and transported to an ice basket (6) symmetrically on the other side of the top of the body, by a synchronous motor (28) on one side of the ice box, the ice block obtained by the ice box is swung and transported to an ice basket (6) on the other side of the top of the body, the water in the ice basket in the upper part of the water tank returns to the water tank through the drain hole of the ice basket, the water tank is connected to the water tank through the water outlet (501) on one side of the bottom of the water tank and the water pump (25) of the water circuit system and the water The pipe (24) returns to the water inlet (27) on the upper side of the ice box for circulating ice making; the left support (7) and right support (9) of the motion mechanism on the upper side of the water tank of the refrigeration system are fixedly set on the inner walls on both sides of the tank opening. At the same time, the motion mechanism is set below the water inlet of the water pipe of the water system. The water inlet of the water pipe is fixedly set on the upper left support of the ice box. The rotating shafts at both ends of the ice box are respectively inserted into the shaft holes of the left and right supports on both sides. The synchronous motor is set on the rotating shaft of the left support at one end of the ice box. A flip cover (2) for taking out the ice basket in the water tank is provided on the top side of the machine body above the ice basket on the other side of the water tank. A cover plate (3) with a control panel is provided on the other side of the top of the machine body with the flip cover symmetrical. A base (4) is provided at the bottom of the machine body. A filter cover (17) is provided at the water outlet in the water tank. The bottom and inner side of the water tank (5) inside the body (1) are provided with an inner bracket (20) that separates the refrigeration system on one side of the bottom of the body. The inner bracket is fixedly installed on the base (4), the inner wall of the body, and the bottom and inner outer diameter of the water tank. The base, body, water tank and inner bracket are connected as one unit. A pressure sensor (13) is provided on one pipe connecting the compressor (12) of the refrigeration system to the evaporator (10). A double-way solenoid valve (16) is provided on another pipe connecting the compressor to the evaporator and condenser (18). A fan (19) is provided on one side of the condenser. The two ends of the capillary tube (15) are connected to the evaporator and condenser respectively. At the same time, the capillary tube is provided with a fan (19) on the condenser side. The drying filter and the pipeline between the drying filter and the condenser are equipped with an NTC temperature sensor (14); the other end of the ice box (11) extends out of the right support (9) and the shaft triggers the upper limit micro switch (21) or the lower limit micro switch (22) fixed on the outside of the right support when it swings. The lower limit micro switch, the upper limit micro switch, the fan, the capillary tube, the compressor, the evaporator, the condenser, the NTC temperature sensor, the pressure sensor, the two-way solenoid valve, the synchronous motor (28) and the water pump (25) are connected to the control panel inside the cover plate (3) through the line. The water pump is fixedly installed on the inner support, and the compressor and the condenser are fixedly installed on the base.

2. The ice maker according to claim 1, characterized in that... A water level sensor (26) is provided at the water inlet (27) of the water pipe (24) of the left support (7). The water level sensor is L-shaped. The head of the water level probe at one end of the water level sensor passes through the convex edge of the left support and is located in front of the water inlet. The ring at the other end of the water level sensor is fixed to the mounting hole of the left support by a wiring washer and screws. The water level sensor is connected to the control panel inside the cover plate (3) by a line.

3. The ice maker according to claim 1, characterized in that... The NTC temperature sensor (14) is installed on a metal strip at one end of the compressor (12) of the refrigeration system inside the body (1). The two ends of the metal strip are fixed to the inner bracket (20) and the base (4) respectively. The NTC temperature sensor is close to the pipeline between the dryer filter and the condenser (18).

4. The ice maker according to claim 1, characterized in that... The ice maker (11) has a crank arm (23) extending from the pivot of the right support (9). The pivot of the ice maker is triggered by the protrusion at one end of the crank arm against the upper limit micro switch (21) located on the right support. The lower limit micro switch (22) is located on the right support corresponding to the upper limit micro switch. After the ice maker swings, the crank arm disconnects the upper limit micro switch and triggers the lower limit micro switch. The moving spring of the upper limit micro switch and the moving spring of the lower limit micro switch are set at a 90-degree angle.

5. The ice maker according to claim 1, characterized in that... The groove inside the ice box (11) is U-shaped. A limiting block (701) is provided in the positioning groove on the left support (7) side above the rotating shaft of the ice box. The limiting block limits the swing position at the groove of the ice box and fixes one end of the U-shaped tube of the evaporator (10) above the ice box through an L-shaped plate. A hinged swing guide plate (8) is provided on the edge of the groove on one side of the ice basket (6) of the ice box.

6. The ice maker according to claim 1, characterized in that... The bottom of the water tank (5) is provided with a drain hole (502) on one side, the drain hole is provided with a water plug, and the base (4) below the drain hole is provided with a through hole for inserting the water plug.

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