Energy-saving automatic ice maker

Abstract

The present invention provides an energy-saving automatic ice-making machine, comprising a plurality of sliding blocks respectively installed on the left and right sides of a pneumatic ice-connecting and water-injecting vehicle, two rows of guide rails matched with the sliding blocks are fixedly connected to the upper end of the outer frame, a container with four cavities is fixedly connected to the pneumatic ice-connecting and water-injecting vehicle, the lower end of each cavity of the container is connected to a water-injecting electric ball valve, a plurality of inlet and outlet valves are fixedly connected to the upper end of the container, a No. 1 ice mold group, a No. 2 ice mold group, a No. 3 ice mold group and a No. 4 ice mold group are sequentially installed on the outer frame from left to right, a reversing valve is respectively fixedly connected on the left and right sides of the four ice mold groups, ice cube molds and freezing swords are arranged inside the four ice mold groups, the present invention uses a PLC controller to control the reversing four-way valve to change the movement direction of the refrigerant, when a certain set of ice mold groups among the four ice mold groups is de-iced and condensed, it is used by other refrigeration ice mold groups to form a cross-operation energy-saving mode, which has the characteristics of energy saving and consumption reduction and rich functions.

Description

Technical Field

[0001] The invention is applied to the technical field of ice making machines, in particular to an energy-saving automatic ice making machine. Background Art

[0002] Ice maker is a refrigeration mechanical device that generates ice by cooling water through the evaporator with the refrigerant of the refrigeration system. It uses the refrigeration system and water as a carrier to make ice by passing through a certain device under power-on state. The shape of the generated ice cubes is different depending on the principle and production method of the evaporator.

[0003] At present, ice machines on the market often use limited refrigerant in a closed refrigeration system to repeatedly compress, condense, expand and evaporate the refrigerant, and continuously absorb heat and vaporize it at the evaporator to cool down the room, which is called refrigeration cycle technology. In actual application, ice machines under traditional electronic control and refrigeration cycle design concepts consume a lot of electricity and have limited refrigeration efficiency.

[0004] The present invention proposes an energy-saving mode of cross-sequential operation of the refrigerator, which can save 65% of electric energy, improve the efficiency of ice making, and has high ice making efficiency and outstanding contribution to energy saving and consumption reduction.

[0005] Therefore, it is very necessary to invent a kind of energy-saving automatic ice making machine. Summary of the invention

[0006] In view of the defects of ice-making machines in the prior art, a main purpose of the present invention is to provide an energy-saving automatic ice-making machine.

[0007] In order to solve the above technical problems, the present invention provides an energy-saving automatic ice-making machine, comprising a pneumatic ice-connecting and water-injecting vehicle (20), an outer frame (18) and an alarm light (16), wherein a plurality of slide blocks are respectively installed on the left and right sides of the pneumatic ice-connecting and water-injecting vehicle, and two rows of guide rails matching with the slide blocks are fixedly connected to the upper end of the outer frame, a container with four cavities is fixedly connected to the pneumatic ice-connecting and water-injecting vehicle, and the lower end of each cavity of the container is connected to a water-injecting electric ball valve, and a plurality of inlet and outlet valves are fixedly connected to the upper end of the container, and a No. 1 ice mold group, a No. 2 ice mold group, and a No. 3 ice mold group are installed on the outer frame in sequence from left to right. The four ice mold groups are respectively connected with a reversing valve on the left and right sides of the four ice mold groups, and ice molds and freezing swords are arranged inside the four ice mold groups. Four brake electromagnets corresponding to the positions of the four ice mold groups are installed on the outer frame, and the four ice mold groups are respectively connected with a reversing four-way valve, the cylinder body is fixed to the outer frame, the end of the cylinder piston rod is connected to the pneumatic ice-connecting and water-injecting vehicle, one end of the drag chain is connected to the pneumatic ice-connecting and water-injecting vehicle, and the other end is connected to the outer frame, the pneumatic solenoid valve is connected to the air outlet of the air pump through a pneumatic pipeline, and the air outlet of the air pump is connected with a high-pressure air filter A water pressure regulator, a low-temperature water storage tank is connected to a cooling water inlet through a pipeline, the water outlet of the low-temperature water storage tank is connected to an ice-making water circulating water pump, a plate heat exchanger is installed on the water outlet pipeline of the ice-making water circulating water pump, a water flow switch is installed on the water inlet pipeline of the ice-making water circulating water pump, the refrigeration unit is composed of a compressor and an air-cooled condenser, the gas outlet of the compressor is connected to the air-cooled condenser, the condenser inlet of the air-cooled condenser is connected to an ice mold heating reversing valve, the condenser outlet on the air-cooled condenser is connected to a water tank refrigeration gas distribution disk connected to the plate heat exchanger, and a Four electronic expansion valve distribution disks are respectively connected to four ice mold groups, each of the electronic expansion valve distribution disks is connected to the water outlet of the plate heat exchanger, a condenser fan junction box is provided on the air-cooled condenser, and the brake electromagnet, the electronic expansion valve distribution disk, the reversing valve, the water flow switch, the pneumatic solenoid valve, the water tank refrigeration distribution disk, the ice-making water circulation pump, the high-pressure air filter water regulator, the air pump, the ice mold heating reversing valve, the reversing four-way valve, the alarm light, the refrigeration unit, and the water injection electric ball valve are electrically connected to the PLC controller respectively.

[0008] Preferably, when one of the four ice modules, namely the No. 1 ice module, the No. 2 ice module, the No. 3 ice module and the No. 4 ice module, is de-iced and condensed, the liquid refrigerant produced is used for refrigeration by the other three ice modules.

[0009] Preferably, the controller is provided with a control touch screen.

[0010] Preferably, the pneumatic solenoid valve is respectively connected to the cylinder air inlet, No. 1 ice mold door switch, No. 2 ice mold door switch, No. 3 ice mold door switch, No. 4 ice mold door switch, the left and right running switch of the ice stripping and water injection vehicle, the up and down running switch of the front end of the ice stripping plate, the up and down running switch of the rear end of the ice stripping plate, the No. 1 ice mold sword groove conversion switch, the No. 2 ice mold sword groove conversion switch, the No. 3 ice mold sword groove conversion switch, and the No. 4 ice mold sword groove conversion switch through a pneumatic pipeline.

[0011] Preferably, the water level sensor inside the low-temperature water storage tank is electrically connected to the PLC controller.

[0012] Preferably, the electronic expansion valve distribution disk includes a manual ball valve A, a night vision goggles A, a filter A, a one-way valve, a solenoid valve A and an electronic expansion valve. The manual ball valve A is connected to the water outlet of the plate heat exchanger. A night vision goggles A is installed on the water outlet connecting pipeline of the manual ball valve A. The water outlet of the night vision goggles A is divided into two branches. One branch passes through the filter A, the solenoid valve A and the electronic expansion valve in sequence and then connects to the ice module group at the corresponding position. The other branch connects to the ice module group at the corresponding position through the one-way valve.

[0013] Preferably, the water tank refrigeration air distribution disk includes a manual ball valve, a night vision goggles, a filter, a solenoid valve, a thermal expansion valve and an evaporation pressure regulating valve; the manual ball valve is connected to the plate heat exchanger, and the water outlet of the manual ball valve is connected to the night vision goggles, the filter, the solenoid valve, the thermal expansion valve and the evaporation pressure regulating valve in sequence.

[0014] Preferably, there are two freezing swords at 1 / 3 and 2 / 3 of the cross section of each ice block inside each ice module.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention changes the traditional concept of electric control and refrigeration cycle, and uses a PLC controller to control a reversing four-way valve to change the direction of refrigerant movement. When the reversing four-way valve is closed, the ice module is an evaporator, and when the reversing four-way valve is opened, the ice module is a condenser. When a set of ice modules among the four ice modules is defrosting and condensing, it is used by other refrigeration ice modules, forming a cross-sequential operation energy-saving mode, pre-cooling water is quantitatively injected in sections, the ice film door is closed by autonomous temperature control, the ice film is defrosted, and the air fan runs alternately, which has the characteristics of energy saving and consumption reduction and rich functions.

[0017] 2. In the present invention, there are two freezing swords at 1 / 3 and 2 / 3 of the cross section of each ice block. Each set of ice molds contains four ice molds and eight freezing swords. During refrigeration, the ice mold set, freezing swords, lower door and nine freezing surfaces are refrigerated at the same time, which changes the refrigeration mode of four freezing surfaces of traditional ice molds and saves energy and increases efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a top view of the structure of the energy-saving automatic ice maker of the present invention.

[0020] Figure 2 It is a main structural diagram of the energy-saving automatic ice-making machine of the present invention.

[0021] Figure 3 It is a left-side structural diagram of the energy-saving automatic ice-making machine of the present invention.

[0022] Figure 4 It is a three-dimensional structural diagram of the air-cooled condenser used in the energy-saving automatic ice-making machine of the present invention.

[0023] Figure 5 The present invention Figure 2 Electronic expansion valve gas distribution coil piping connection diagram.

[0024] Figure 6 The present invention Figure 2 The water tank refrigeration gas distribution coil piping connection diagram.

[0025] Figure 7 The utility model is a circuit principle diagram of the energy-saving automatic ice-making machine of the present invention.

[0026] Figure 8 The present invention Figure 7 The continuation circuit diagram.

[0027] Fig. 9 The present invention Figure 8 The continuation circuit diagram.

[0028] Fig.10 The present invention Fig. 9 The continuation circuit diagram.

[0029] Fig.11 The present invention Fig.10 The continuation circuit diagram.

[0030] Fig.12 It is the electrical control diagram of the controller of the present invention.

[0031] Fig.13 This is the electrical control diagram of the expansion module of the present invention.

[0032] Fig.14 It is a schematic diagram of the touch screen circuit of the present invention.

[0033] Fig.15 The invention discloses an ice film expansion valve controller circuit schematic.

[0034] In the figure,

[0035] 1-brake solenoid, 2-electronic expansion valve gas distribution plate, 3-reversing valve, 4-water flow switch, 5-pneumatic solenoid valve, 6-plate heat exchanger, 7-water tank refrigeration gas distribution plate, 8-ice making water circulation pump, 9-high-pressure air filter water regulator, 10-low-temperature water storage tank, 11-air pump, 12-ice mold heating reversing valve, 13-reversing four-way valve, 14-drag chain, 15-cylinder, 16-alarm light, 17-controller, 18-outer frame, 19-refrigeration unit, 20-pneumatic ice and water injection vehicle, 21-slider, 22-guide rail, 23-freezing sword, 24-water injection electric ball valve, 25-inlet and exhaust valve, 26-container, 27-air-cooled condenser, 28-No. 4 ice mold group, 29-No. 3 ice mold group, 30-No. 2 ice mold group, 31-No. 1 ice mold group;

[0036] 70-manual ball valve, 71-night vision goggles, 72-filter, 73-solenoid valve, 74-thermal expansion valve, 75-evaporation pressure regulating valve;

[0037] 200-manual ball valve A, 201-night vision goggles A, 202-filter A, 203-check valve, 204-solenoid valve A, 205-electronic expansion valve. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

[0039] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0040] like Figures 1 to 15As shown, the energy-saving automatic ice maker includes a brake electromagnet 1, an electronic expansion valve gas distribution plate 2, a reversing valve 3, a water flow switch 4, a pneumatic solenoid valve 5, a plate heat exchanger 6, a water tank refrigeration gas distribution plate 7, an ice-making water circulation pump 8, a high-pressure air filter water regulator 9, a low-temperature water storage tank 10, an air pump 11, an ice mold heating reversing valve 12, a reversing four-way valve 13, a drag chain 14, a cylinder 15, an alarm light 16, a PLC controller 17, an outer frame 18, a refrigeration unit 19, a pneumatic ice receiving and water injection vehicle 20, and a slider 2 1, guide rails 22, freezing sword 23, water injection electric ball valve 24, inlet and outlet valve 25, container 26, air-cooled condenser 27, No. 4 ice module 28, No. 3 ice module 29, No. 2 ice module 30, No. 1 ice module 31, refrigeration water inlet 32, condenser inlet 33, condenser outlet 34 and condenser fan terminal box 35; the pneumatic ice receiving and water injection vehicle 20 is respectively equipped with a plurality of sliders 21 on the left and right sides, and the upper end of the outer frame 18 is fixedly connected with two rows of guide rails 22 matched with the sliders 21, and the sliders 21 are used to connect with the guide rails 22. The rail 22 precisely cooperates with the guide to enable the pneumatic ice receiving and water injection vehicle 20 to accurately move to the designated position. A container 26 with four cavities is fixedly connected to the pneumatic ice receiving and water injection vehicle 20. The lower end of each cavity of the container 26 is connected to a water injection electric ball valve 24. The upper end of the container 26 is fixedly connected to a plurality of inlet and outlet valves 25. When water is introduced into the container 26, the inlet and outlet valves 25 automatically exhaust air. When water is discharged from the container 26, the inlet and outlet valves 25 automatically intake air. The outer frame 18 is sequentially installed with a No. 1 ice mold group 31, a No. 2 ice mold group 30, and a No. 3 ice mold group 40 from left to right. Ice module set 29 and No. 4 ice module set 28, each ice block has two freezing swords at 1 / 3 and 2 / 3 of the cross section, each set of ice module set contains four ice blocks and eight freezing swords. The whole set of equipment has four sets of ice module sets (16 ice blocks, 32 freezing swords). When refrigerating, the ice module set, freezing sword, lower door, and nine freezing surfaces are refrigerated at the same time, changing the traditional ice module four freezing surface refrigeration mode, saving energy and increasing efficiency. When the single ice module is defrosting, the freezing sword, lower door, and heating defrosting parameters are adjusted according to the season (3-5min).The lower door is opened by an elastic pneumatic pull-out door opening method, and then the four walls of the ice mold group are heated and ice is removed until the four ices are removed and the ice receiving plate slides out. A reversing valve 3 is fixedly connected to the left and right sides of the four ice mold groups, and ice cube molds and freezing swords 23 are arranged inside the four ice mold groups. Four brake electromagnets 1 corresponding to the positions of the four ice mold groups are installed on the outer frame 18. A reversing four-way valve 13 is connected to each of the four ice mold groups. The cylinder body of the cylinder 15 is fixedly connected to the outer frame 18, and the end of the piston rod of the cylinder 15 is connected to the pneumatic ice receiving and water injection vehicle 20. One end of the drag chain 14 is connected to the pneumatic ice and water injection vehicle 20, and the other end is connected to the outer frame 18. The pneumatic solenoid valve 5 is connected to the air outlet of the air pump 11 through a pneumatic pipeline. The air outlet of the air pump 11 is connected to a high-pressure air filter water regulator 9. The low-temperature water storage tank 10 is connected to the refrigeration water inlet 32 ​​through a pipeline. The outlet of the low-temperature water storage tank 10 is connected to an ice-making water circulation pump 8. A plate heat exchanger 6 is installed on the outlet pipeline of the ice-making water circulation pump 8. A water flow switch 4 is installed on the water inlet pipeline of the ice-making water circulation pump 8. In the PLC system Under control, the ice-making water circulation pump 8 runs for min and the water flow switch 4 is turned on, otherwise the ice-making system is shut down. The refrigeration unit 19 is composed of a compressor and an air-cooled condenser 27. The gas outlet of the compressor is connected to the air-cooled condenser 27. The condenser inlet 33 of the air-cooled condenser 27 is connected to an ice mold heating reversing valve 12. The condenser outlet 34 on the air-cooled condenser 27 is connected to the water tank refrigeration gas distribution disk 7 connected to the plate heat exchanger 6. Four electronic expansion valve gas distribution disks corresponding to the four ice mold groups are installed on the outer frame 18. 2. Each electronic expansion valve gas distribution plate 2 is connected to the water outlet of the plate heat exchanger 6. A condenser fan junction box 35 is provided on the air-cooled condenser 27. The brake electromagnet 1, the electronic expansion valve gas distribution plate 2, the reversing valve 3, the water flow switch 4, the pneumatic solenoid valve 5, the water tank refrigeration gas distribution plate 7, the ice-making water circulation pump 8, the high-pressure air filter water regulator 9, the air pump 11, the ice mold heating reversing valve 12, the reversing four-way valve 13, the alarm light 16, the refrigeration unit 19, and the water injection electric ball valve 24 are electrically connected to the PLC controller 17 respectively;

[0041] When one of the four ice modules, the first ice module 31, the second ice module 30, the third ice module 29 and the fourth ice module 28, is de-iced and condensed, the liquid refrigerant produced is used for refrigeration by the other three ice modules;

[0042] The controller 17 is provided with a control touch screen for easy operation and input of control instructions;

[0043] The pneumatic solenoid valve 5 is respectively connected to the air inlet of the cylinder 15, the No. 1 ice mold door switch, the No. 2 ice mold door switch, the No. 3 ice mold door switch, the No. 4 ice mold door switch, the left and right running switch of the de-icing and water injection vehicle, the up and down running switch of the front end of the de-icing plate, the up and down running switch of the rear end of the de-icing plate, the No. 1 ice mold sword groove conversion switch, the No. 2 ice mold sword groove conversion switch, the No. 3 ice mold sword groove conversion switch, and the No. 4 ice mold sword groove conversion switch through the pneumatic pipeline;

[0044] The water level sensor inside the low-temperature water storage tank 10 is electrically connected to the PLC controller 17. The electronic expansion valve gas distribution panel 2 includes a manual ball valve A200, a night vision goggles A201, a filter A202, a one-way valve 203, a solenoid valve A204 and an electronic expansion valve 205. The manual ball valve A200 is connected to the water outlet of the plate heat exchanger 6. A night vision goggles A201 is installed on the water outlet connecting pipeline of the manual ball valve A200. The water outlet of the night vision goggles A201 is divided into two branches. One branch is connected to the ice module at the corresponding position through the filter A202, the solenoid valve A204 and the electronic expansion valve 205 in sequence, and the other branch is connected to the ice module at the corresponding position through the one-way valve 203.

[0045] The water tank refrigeration air distribution panel 7 includes a manual ball valve 70, a night vision goggles 71, a filter 72, a solenoid valve 73, a thermal expansion valve 74 and an evaporation pressure regulating valve 75; the manual ball valve 70 is connected to the plate heat exchanger 6, and the water outlet of the manual ball valve 70 is connected to the night vision goggles 71, the filter 72, the solenoid valve 73, the thermal expansion valve 74 and the evaporation pressure regulating valve 75 in sequence.

[0046] The present invention changes the traditional concept of electric control and refrigeration cycle. Under the control of PLC controller 17, a reversing four-way valve 13 is provided for each ice module group to change the direction of refrigerant movement. When the reversing four-way valve 13 is closed, the ice module group is an evaporator. When the reversing four-way valve 13 is opened, the ice module group is a condenser. The reversing four-way valve 13 is opened when de-icing and heating, and is closed when cooling or stopping. When one of the four ice modules of No. 1 ice module group 31, No. 2 ice module group 30, No. 3 ice module group 29 and No. 4 ice module group 28 is de-iced and condensed, it supplies the other modules. Use of refrigeration ice modules, cross-refrigeration of ice modules, electronic expansion valve PID control of 5 states to save energy, reciprocating cycle for continuous production, as well as two-way freezing line, freezing sword 23 implantation, lower door cold and hot extraction mode door opening and closing, ice film cooling and heating five working states, pre-cooling water segmented quantitative injection, autonomous temperature control to close the ice film door, ice film de-icing time type, airflow separation, refrigerant constant pressure, fan alternating operation, through the above design and actual debugging, it is 1.65 times the function of other aluminum trough ice making equipment and saves 65% of electricity.

[0047] According to the system requirements, the pneumatic ice and water injection vehicle 20 is operated sequentially or non-sequentially between four or fewer ice modules.

[0048] The pneumatic ice receiving and water injection truck 20 operates in the first stage (starting stage), closes the lower door of the No. 1 ice module 31, and the low-temperature water storage tank 10 is filled with 2-5℃ cold water. The ice-making water circulation pump 8 is shut down for 1 minute. When only one ice module is refrigerating, the refrigeration unit 19 can adjust the electronic expansion valve 205 in the 50% electronic expansion valve distribution panel 2 to open, and the ice module refrigeration reaches below -10℃. The first water injection of the No. 1 ice module 31, the four water injection electric ball valves 24 are opened for 8S and closed (about 1L of water), and the ice module continues to refrigerate -11℃. The second water injection is carried out for 480S after an interval of 1min from the first water injection. After the second water injection, the next ice module starts to refrigerate, and the water addition interval is 27min after the second water addition of the previous ice module. According to the above operation requirements, after the No. 4 ice module 28 is fully filled with water, the starting stage ends;

[0049] 2) The second stage of operation of the ice receiving and water injection vehicle (normal production stage), after the second water injection of ice module group 31 is completed, the heating and deicing program is entered after the cumulative cooling time of 125 minutes, and the deicing alarm light 16 is on. The ice receiving and water injection vehicle is placed below the ice module group 31, the brake solenoid 1 is turned on, the reversing four-way valve 13 at the lower end of the ice module group 31 is turned on, and the ice module heating reversing valve 12 is closed (the high pressure is automatically adjusted to be less than 19B), and the two swords of the ice module group 31 are turned on (closed for 3-5 minutes according to the season), the refrigeration machine can be adjusted to 100%, and the electronic expansion valve 205 at the lower end of the ice module group that is not deicing is opened. The four ice blocks of the ice module group 31 are all detached, triggering the sensor, and the ice receiving plate is angled down outside the ice discharger. The following working state executes the content of item 3 once, and the normal production stage is carried out in an infinite automatic cycle.

[0050] 3) The ice receiving and water injection truck operates in three stages (normal ice collecting and refrigerant collection shutdown stage). When a certain ice module is filled with water, it is the boundary. The stop button is turned on. From then on, the ice module starts to enter the normal ice collecting and refrigerant collection shutdown stage. The No. 1 ice module 31 starts to perform the project refrigeration accumulation until the ice receiving plate drops at an angle and ends outside the ice discharge machine. The No. 1 ice module 31 is the same as the No. 2 ice module 30. The difference is that when the No. 2 ice module 30 is detached, the No. 1 ice module 31 opens the door for refrigeration without ice, and the No. 3 ice module 29 is the same as ice module No. 1 31, except that when ice module No. 3 29 is defrosting, ice module No. 2 30 and ice module No. 1 31 have no ice and open the door for refrigeration; ice module No. 4 28 is the same as ice module No. 1 31, except that when ice module No. 4 28 is defrosting, other ice modules have no ice and open the door for refrigeration; when all four ice modules are defrosted, the refrigeration unit enters the refrigerant collection operation state; when the suction pressure reaches the shutdown pressure, the refrigeration system shuts down, and the normal ice and refrigerant collection shutdown stage ends.

[0051] The PLC controller 17 controls the switch of the pneumatic solenoid valve 5, controls the extension and retraction of the piston rod of the cylinder 15, cooperates with the brake electromagnet 1 to accurately control the water injection pipe to align with the water injection port position, adjusts the valve opening at both ends of the cylinder, and controls the running speed of the piston rod of the cylinder 15. The error of aligning the center line of any one of the four ice mold groups is less than 2mm, which can effectively prevent shaking;

[0052] The ice mold heating reversing valve 12 is under the control of the PLC system. When an ice mold group is deicing, the ice mold heating reversing valve 12 is closed. When the deicing exhaust pressure is higher than 19B (the solenoid valve is closed when it is lower than 16B), the ice mold heating reversing valve 12 is opened when the four ice mold groups are not deicing.

[0053] The low temperature water storage tank 10 is under the control of the PLC system. The water temperature is controlled at 2-5°C before entering the quantitative water storage tank. The water level is controlled by the automatic water float. The water level sensor alarms for high and low water levels, stopping the ice maker. The effective volume of the water storage tank is equal to twice the volume of the quantitative water storage tank.

[0054] The water tank refrigeration gas distribution panel 7 is controlled by the PLC system, and can have refrigerant visualization, refrigerant filtration, solenoid valve 73 switch to control the flow of refrigerant, thermal expansion valve 74 opening automatic control, evaporation pressure regulating valve 75 to adjust the evaporation pressure to prevent the plate heat exchanger from freezing;

[0055] Four sets of electronic expansion valve gas distribution panels 2, each controlling one ice module, under the control of PLC program and the execution of PID system, can have two-way visualization of refrigerant, refrigerant filtration, one-way refrigerant flow for heating, solenoid valve A204 switches refrigerant flow, electronic expansion valve 205 opening range 1-480 steps, 4-stage + 3-state working mode for cooling;

[0056] a. 1st stage ice module no ice closed door refrigeration temperature control -10℃ electronic expansion valve 205 limited to 200 steps;

[0057] b. 2-stage ice module temperature control -11℃ timing 40min;

[0058] c. 3-stage ice module temperature control -12℃ timing 40min;

[0059] d. 4-stage ice module temperature control -13℃ timing 45min;

[0060] e. State 1: When the PID temperature control of the ice module reaches the lower limit, the electronic expansion valve 205 is limited to opening 1 step;

[0061] f. State 2: When the ice module PID control single mode is in operation, the electronic expansion valve is limited to 370 steps;

[0062] g. State 3 is not the de-icing state of the ice module, and the ice module PID control electronic expansion valve 205 is limited to open 300 steps.

[0063] Utilizing the technical solution described in the present invention, or those skilled in the art designing a similar technical solution inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. An energy-saving automatic ice-making machine, characterized in that: The invention comprises a pneumatic ice receiving and water injection vehicle (20), an outer frame (18) and an alarm light (16), wherein a plurality of slide blocks (21) are respectively installed on the left and right sides of the pneumatic ice receiving and water injection vehicle (20), and the upper end of the outer frame (18) is fixedly connected to two rows of guide rails (22) that cooperate with the slide blocks (21), and a container (26) provided with four cavities is fixedly connected to the pneumatic ice receiving and water injection vehicle (20), and the lower end of each cavity of the container (26) is connected to a water injection electric ball valve (24), and the upper end of the container (26) is fixedly connected to a plurality of inlet and outlet valves (25), and the outer frame (18) is sequentially installed with a No. 1 ice mold group (31), a No. 2 ice mold group (30), a No. 3 ice mold group (29) from left to right. ) and a fourth ice module group (28), a reversing valve (3) is fixedly connected to the left and right sides of each of the four ice module groups, and ice cube molds and freezing swords (23) are arranged inside the four ice module groups. When one of the four ice module groups, namely, the first ice module group (31), the second ice module group (30), the third ice module group (29) and the fourth ice module group (28), is de-iced and condensed, liquid refrigerant is generated for refrigeration by the other three ice module groups, and four brake electromagnets (1) corresponding to the positions of the four ice module groups are installed on the outer frame (18). A reversing four-way valve (13) is connected to each of the four ice module groups, and a cylinder body of the cylinder (15) is fixedly connected to the outer frame (18). The end of the piston rod of the cylinder (15) is connected to the outer frame (18). On the pneumatic ice receiving and water injection vehicle (20), one end of the drag chain (14) is connected to the pneumatic ice receiving and water injection vehicle (20), and the other end is connected to the outer frame (18); the pneumatic solenoid valve (5) is connected to the air outlet of the air pump (11) via a pneumatic pipeline; the air outlet of the air pump (11) is connected to a high-pressure air filter and water regulator (9); the low-temperature water storage tank (10) is connected to the refrigeration water inlet (32) via a pipeline; the water outlet of the low-temperature water storage tank (10) is connected to an ice-making water circulation pump (8); a plate heat exchanger (6) is installed on the water outlet pipeline of the ice-making water circulation pump (8); a water flow switch (4) is installed on the water inlet pipeline of the ice-making water circulation pump (8); and the refrigeration machine The group (19) is composed of a compressor and an air-cooled condenser (27), the gas outlet of the compressor is connected to the air-cooled condenser (27), the condenser inlet (33) of the air-cooled condenser (27) is connected to an ice mold heating reversing valve (12), the condenser outlet (34) on the air-cooled condenser (27) is connected to a water tank refrigeration gas distribution disk (7) connected to the plate heat exchanger (6), four electronic expansion valve gas distribution disks (2) respectively connected to four ice mold groups are installed on the outer frame (18), each of the electronic expansion valve gas distribution disks (2) is connected to the water outlet of the plate heat exchanger (6), and a condenser fan terminal box (35) is provided on the air-cooled condenser (27).The brake solenoid (1), the electronic expansion valve air distribution panel (2), the reversing valve (3), the water flow switch (4), the pneumatic solenoid valve (5), the water tank refrigeration air distribution panel (7), the ice making water circulation pump (8), the high-pressure air filter water regulator (9), the air pump (11), the ice mold heating reversing valve (12), the reversing four-way valve (13), the alarm light (16), the refrigeration unit (19), and the water injection electric ball valve (24) are respectively connected to the PLC controller ( 17) is electrically connected, the PLC controller (17) is provided with a control touch screen, and the pneumatic solenoid valve (5) is respectively connected to the air inlet of the cylinder (15), the No. 1 ice mold door switch, the No. 2 ice mold door switch, the No. 3 ice mold door switch, the No. 4 ice mold door switch, the left and right running switch of the de-icing and water injection vehicle, the front end up and down running switch of the de-icing plate, the rear end up and down running switch of the de-icing plate, the No. 1 ice mold sword groove conversion switch, the No. 2 ice mold sword groove conversion switch, the No. 3 ice mold sword groove conversion switch, and the No. 4 ice mold sword groove conversion switch through the pneumatic pipeline.

2. The energy-saving automatic ice-making machine according to claim 1, characterized in that: The water level sensor inside the low-temperature water storage tank (10) is electrically connected to the PLC controller (17).

3. The energy-saving automatic ice-making machine according to claim 1, characterized in that: The electronic expansion valve gas distribution disk (2) comprises a manual ball valve A (200), a night vision goggles A (201), a filter A (202), a one-way valve (203), a solenoid valve A (204) and an electronic expansion valve (205). The manual ball valve A (200) is connected to a water outlet of a plate heat exchanger (6). A night vision goggles A (201) is installed on a pipeline connected to the water outlet of the manual ball valve A (200). The water outlet of the night vision goggles A (201) is divided into two branches. One branch passes through the filter A (202), the solenoid valve A (204) and the electronic expansion valve (205) in sequence and then communicates with an ice module at a corresponding position. The other branch passes through the one-way valve (203) and communicates with an ice module at a corresponding position.

4. The energy-saving automatic ice-making machine according to claim 1, characterized in that: The water tank refrigeration gas distribution disk (7) comprises a manual ball valve (70), a night vision goggles (71), a filter (72), a solenoid valve (73), a thermal expansion valve (74) and an evaporation pressure regulating valve (75); the manual ball valve (70) is connected to the plate heat exchanger (6); and a water outlet of the manual ball valve (70) is connected to the night vision goggles (71), the filter (72), the solenoid valve (73), the thermal expansion valve (74) and the evaporation pressure regulating valve (75) in sequence.

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