CN117111533B - Control circuit of ice machine, PCB and ice machine - Google Patents
Control circuit of ice machine, PCB and ice machine Download PDFInfo
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- CN117111533B CN117111533B CN202311305819.4A CN202311305819A CN117111533B CN 117111533 B CN117111533 B CN 117111533B CN 202311305819 A CN202311305819 A CN 202311305819A CN 117111533 B CN117111533 B CN 117111533B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 269
- 238000001514 detection method Methods 0.000 claims abstract description 121
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000035622 drinking Effects 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 2
- 230000005669 field effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 101100100146 Candida albicans NTC1 gene Proteins 0.000 description 6
- 101150037899 REL1 gene Proteins 0.000 description 5
- 101100099158 Xenopus laevis rela gene Proteins 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
Abstract
The application discloses a control circuit of an ice machine, a PCB (printed circuit board) and the ice machine, wherein the control circuit comprises a main control unit, a detection unit, a working control unit, a switching unit and an instant heating unit, wherein the detection unit, the working control unit, the switching unit and the instant heating unit are respectively electrically connected with the main control unit, the switching unit comprises a filtering part and a plurality of switching parts, the filtering part is respectively electrically connected with the main control unit, the switching parts are used for adjusting the switching state of an electromagnetic valve or a motor of the ice machine, and the switching parts are respectively connected with the filtering part; the instant heating unit comprises a voltage detection part which is respectively connected with the main control unit and the filtering part, and the voltage detection part is used for realizing voltage calibration; the control circuit disclosed by the application comprises a voltage detection part, wherein the voltage detection part acquires the voltage of the filtering part for detection, and feeds back the detection result to the main control unit so as to realize voltage calibration, ensure that the working voltage at two ends of the heat pipe is stable, and avoid the occurrence of the temperature of overhigh or insufficient water outlet temperature.
Description
Technical Field
The invention relates to the technical field of ice making equipment, in particular to a control circuit of an ice maker, a PCB and the ice maker.
Background
The ice maker is a refrigeration mechanical device which cools water through an evaporator by a refrigerant of a refrigeration system to generate ice; the refrigerating system takes water as a carrier, so that ice can be conveniently and rapidly manufactured after passing through a certain device in an electrified state, and the refrigerating system is popular with the public; the use of ice machines is now becoming more popular as the quality of life of people increases.
In the working process, as the operation effect of the heat pipe is influenced by voltage, if the actual voltage at two ends of the heat pipe is deviated from the preset working voltage, namely the voltage output fluctuates, the problem of overhigh or insufficient water outlet temperature is caused, and if the water outlet temperature is high, the working load of a compression mechanism of the ice machine is increased, so that the working energy consumption of the ice machine is increased; if the temperature of the water outlet is insufficient, the problem that the pure water is not completely heated and boiled can occur, and the quality of ice cubes made by the ice maker is affected.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a control circuit of an ice maker, which can perform voltage detection and calibration, ensure that the voltage at two ends is stable when a heat pipe works, and avoid the problems of over-high temperature or insufficient temperature of water outlet.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The control circuit of the ice machine comprises a main control unit, a detection unit, a work control unit, a switch unit and an instant heating unit, wherein the detection unit, the work control unit, the switch unit and the instant heating unit are respectively and electrically connected with the main control unit, the switch unit comprises a filter part and a plurality of switch parts, the filter part is respectively and electrically connected with the main control unit, the switch parts are used for adjusting the switch state of an electromagnetic valve or a motor of the ice machine, and the switch parts are respectively connected with the filter part; the instant heating unit comprises a voltage detection part, wherein the voltage detection part is respectively connected with the main control unit and the filtering part, and the voltage detection part is used for realizing voltage calibration.
The control circuit of the ice machine further comprises a voltage reduction unit, wherein the input end of the voltage reduction unit is used for being connected with the 24V output end of the power panel of the ice machine, the output end of the voltage reduction unit is respectively and electrically connected with the main control unit, the detection unit and the instant heating unit, and the output end of the voltage reduction unit is used for providing direct-current power supply voltage of 5V.
In the control circuit of the ice maker, the detection unit comprises a water temperature detection part, a water quality detection part, a water level detection part and a position detection part which are respectively and electrically connected with the main control unit; the water temperature detection part comprises a first water temperature detection group and a second water temperature detection group which are respectively and electrically connected with the main control unit, the first water temperature detection group is used for detecting the water outlet temperature and the water inlet temperature of the heat pipe, and the second water temperature detection group is used for detecting the temperature of cold water; the water level detection part comprises a first water level detection group, a second water level detection group and a third water level detection group which are respectively and electrically connected with the main control unit, wherein the first water level detection group is used for realizing the water level detection of the pure water tank, the second water level detection group is used for realizing the water level detection of the cold water tank, and the third water level detection group is used for realizing the low water level detection of the original water tank and the high water level detection of the waste water tank; the water quality detection part is used for detecting raw water quality and pure water quality, and the position detection part is used for detecting the placing position of the raw water tank.
In the control circuit of the ice machine, the instant heating unit further comprises a heating control part and a zero crossing detection part, wherein the input end of the heating control part is connected with the main control unit, and the output end of the heating control part is used for being connected with a silicon controlled small plate of the ice machine; the input end of the zero-crossing detection part is used for being connected with a temperature controller of the water purifying drinking machine, and the output end of the zero-crossing detection part is connected with the main control unit; the zero crossing detection part is used for realizing dry combustion alarm.
In the control circuit of the ice maker, the work control unit comprises a plurality of first control parts, a plurality of second control parts, a pressurizing control part, a fan control part and an ultraviolet control part; the input ends of the plurality of first control parts are respectively and electrically connected with the main control unit, and the output ends of the first control parts are used for outputting control signals to a waste water valve or an ice removing valve or a drain valve or an ice making water pump of the purified water dispenser; the input ends of the second control parts are respectively and electrically connected with the main control unit, and the output ends of the second control parts are used for outputting control signals to an instant heating water outlet pump or a cold water outlet pump of the water purifying and drinking machine; the input end of the pressurizing control part is electrically connected with the main control unit, and the output end of the pressurizing control part is used for outputting a control signal to a pressurizing pump of the water purifying and drinking machine; the input end of the fan control part is electrically connected with the main control unit, and the output end of the fan control part is used for outputting a control signal to a fan of the water purifying and drinking machine; the ultraviolet control part comprises a first ultraviolet control group and a second ultraviolet control group, the input end of the first ultraviolet control group and the input end of the second ultraviolet control group are respectively and electrically connected with the main control unit, and the output end of the first ultraviolet control group and the output end of the second ultraviolet control group are used for outputting control signals to ultraviolet lamp tubes corresponding to the water purifying and drinking machine.
In the control circuit of the ice maker, the main control unit comprises a second control chip U2 and a timing part, and the timing part, the detection unit, the working control unit, the switching unit and the instant heating unit are respectively and electrically connected with the second control chip U2.
In the control circuit of the ice maker, the voltage detection part comprises a voltage transformer T1 and a twenty-ninth capacitor C29, a pin 1 of the voltage transformer T1 is connected with one end of the twenty-ninth capacitor C29 and is used for being connected with a live wire end of a heat pipe; the pin 3 of the voltage transformer T1 is connected with the other end of the twenty-ninth capacitor C29 and is used for connecting a zero line end of a heat pipe; and the pin 2 and the pin 4 of the voltage transformer T1 are respectively connected with the pin 10 and the pin 9 of the second control chip U2.
In the control circuit of the ice maker, the zero crossing detection part comprises a fourth control chip U4, a pin 1 of the fourth control chip U4 is used for being connected with a temperature controller of the ice maker, a pin 2 of the fourth control chip U4 is used for being connected with a fire wire end of a heat pipe, a pin 3 of the fourth control chip U4 is connected with a pin 33 of the second control chip U2, and the pin 4 of the fourth control chip U4 is grounded.
The invention also correspondingly provides a PCB board, and the control circuit of the ice maker is printed on the PCB board.
The invention also correspondingly provides an ice maker, which comprises an electric control assembly, wherein the electric control assembly comprises the PCB.
The beneficial effects are that:
The invention provides a control circuit of an ice machine, which comprises a filtering part and a voltage detection part, wherein the filtering part is used for filtering interference signals possibly occurring when a switch part works, and improving the stability of the switch part when the switch part works, so that the sensitivity and the stability of corresponding parts of the ice machine when the corresponding parts work are improved; the voltage detection part acquires the live wire voltage and the zero line voltage of the filtering part to detect, and feeds back the detection result to the main control unit to realize voltage calibration, so that the working voltage at two ends of the heat pipe is stable during working, the temperature of overhigh or insufficient water outlet temperature is avoided, and the ice making effect and ice making quality of the ice maker are improved.
Drawings
FIG. 1 is a circuit block diagram of a control circuit of an ice maker provided by the present invention;
FIG. 2 is a circuit diagram of a buck unit according to the present invention;
FIG. 3 is a circuit diagram of a master control unit provided by the invention;
FIG. 4 is a circuit configuration diagram of a detection unit according to the present invention;
FIG. 5 is a circuit block diagram of the work control unit provided by the present invention;
Fig. 6 is a circuit configuration diagram of a switch unit provided by the present invention;
fig. 7 is a circuit configuration diagram of an instant heating unit provided by the present invention.
Description of main reference numerals: the device comprises a 1-main control unit, an 11-timing part, a 2-detection unit, a 21-water temperature detection part, a 22-water quality detection part, a 23-water level detection part, a 24-position detection part, a 3-working control unit, a 31-first control part, a 32-second control part, a 33-supercharging control part, a 34-fan control part, a 35-ultraviolet control part, a 4-switching unit, a 41-filtering part, a 42-switching part, a 5-instant heating unit, a 51-voltage detection part, a 52-heating control part, a 53-zero crossing detection part and a 6-step-down unit.
Detailed Description
The invention provides a control circuit of an ice maker, a PCB and the ice maker, and further detailed description of the invention is given below with reference to the accompanying drawings and the embodiments in order to make the purposes, the technical schemes and the effects of the invention clearer and more definite.
In the description of the present invention, it should be understood that the terms "mounted," "connected," and the like should be construed broadly, and that the specific meaning of the terms in the present invention may be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 to 7, the present invention provides a control circuit of an ice maker, which comprises a main control unit 1, a detection unit 2, a working control unit 3, a switch unit 4 and an instant heating unit 5, wherein the detection unit 2, the working control unit 3, the switch unit 4 and the instant heating unit 5 are respectively electrically connected with the main control unit 1, the switch unit 4 comprises a filter part 41 and a plurality of switch parts 42, the switch parts 42 are used for adjusting the switch state of an electromagnetic valve or a motor of the ice maker, and the switch parts 42 are respectively connected with the filter part 41; the instant heating unit 5 includes a voltage detection unit 51, the voltage detection unit 51 is connected to the main control unit 1 and the filtering unit 41, respectively, and the voltage detection unit 51 is used for realizing voltage calibration.
The invention discloses a control circuit of an ice machine, which comprises a filtering part 41 and a voltage detection part 51, wherein the filtering part 41 is used for filtering interference signals possibly occurring when a switch part 42 works, improving the stability of the switch part 42 when working, ensuring the normal working of an electromagnetic valve or a motor, and improving the sensitivity and the stability of corresponding parts of the ice machine when working; the voltage detection part 51 obtains the live wire voltage and the zero wire voltage of the filtering part 41 to detect, and feeds back the detection result to the main control unit 1 to realize voltage calibration, so as to ensure that the working voltages at two ends are stable when the heat pipe works, avoid the occurrence of the temperature of overhigh or insufficient water outlet temperature, and improve the ice making effect and ice making quality of the ice maker.
In this embodiment, referring to fig. 3 and 6, the switch unit 4 includes three switch portions 42, and an input end of one switch portion 42 is connected to the pin 32 of the second control chip U2, for controlling the ice-removing solenoid valve to start or stop working, so as to provide heat for the ice maker in the ice maker; an input end of a switch part 42 is connected with a pin 4 of the second control chip U2 and is used for controlling the rotation of the reversing motor so as to realize the reversing function of the ice making box; the input end of a switch part 42 is connected with the pin 22 of the second control chip U2 and is used for controlling the ice-making motor to rotate so as to realize the ice-making function; the three switch parts 42 have the same structure, taking the switch part 42 for controlling the ice-removing electromagnetic valve as an example, the switch part 42 comprises a first relay REL1 and an eleventh triode Q11, the pin 1 of the first relay REL1 is connected with the filtering part 41, the pin 2 of the first relay REL1 is used for connecting the ice-removing electromagnetic valve, the pin 3 of the first relay REL1 is used for connecting 24V direct current voltage provided by a power panel of the ice maker, the pin 3 and the pin 4 of the first relay REL1 are respectively connected with a collector of the eleventh triode Q11, a base of the eleventh triode Q11 is connected with the pin 32 of the second control chip U2, and an emitter of the eleventh triode Q11 is grounded.
In this embodiment, referring to fig. 3 and 6, the filtering portion 41 includes a twenty-ninth capacitor C29, a sixty-first resistor R61, a sixty-second resistor R62, a sixty-third resistor R63, a varistor ZNR1 and a fuse F1, wherein one end of the twenty-ninth capacitor C29, one end of the sixty-first resistor R61, one end of the varistor ZNR1 and one end of the fuse F1 are respectively connected with the hot wire end of the hot pipe and the input end of the voltage detecting portion 51, and the other end of the twenty-ninth capacitor C29, the other end of the sixty-third resistor R63 and the other end of the varistor ZNR1 are respectively connected with the zero wire end of the hot pipe, the zero wire end of the ice removing solenoid valve, the zero wire end of the reversing motor, the zero wire end of the ice discharging motor and the input end of the voltage detecting portion 51; the sixty-first resistor R61, the sixty-second resistor R62 and the sixty-third resistor R63 are sequentially connected in series.
In this embodiment, referring to fig. 3 and 7, the voltage detecting portion 51 includes a voltage transformer T1, a pin 1 of the voltage transformer T1 is connected to a live wire end of the heat pipe and one end of a twenty-ninth capacitor C29, a pin 3 of the voltage transformer T1 is connected to a zero wire end of the heat pipe and the other end of the twenty-ninth capacitor C29, and a pin 2 and a pin 4 of the voltage transformer T1 are respectively connected to a pin 10 and a pin 9 of a second control chip U2 of the main control unit 1; the voltage detection part 51 feeds back the voltage between the hot pipe fire wire end and the zero wire end to the main control unit 1 through the voltage transformer T1, and the voltage of the two ends of the hot pipe is adjusted through the instant heating unit after the voltage of the second control chip U2 is corrected, so that the water outlet temperature of the instant heat pipe is ensured to be consistent with the preset water outlet temperature, and the stability of the instant heat pipe during operation is improved.
Further, referring to fig. 2, the control circuit of the ice maker further includes a voltage reducing unit 6, an input end of the voltage reducing unit 6 is connected to a 24V output end of a power board of the ice maker, an output end of the voltage reducing unit 6 is electrically connected to the main control unit 1, the detecting unit 2 and the instant heating unit 5, and an output end of the voltage reducing unit 6 is used for providing a 5V dc supply voltage.
In this embodiment, referring to fig. 2, the voltage step-down unit 6 includes a first control chip U1, a second filter capacitor EC2, a twelfth capacitor C12, a thirteenth capacitor C13, and a twenty-seventh resistor R27; the pin 3 of the first control chip U1 is respectively connected with the anode of the second filter capacitor EC2 and one end of the thirteenth capacitor C13 and 24V direct-current voltage provided by a power panel of the ice maker; the pin 5 of the first control chip U1 is connected with the pin 4 of the first control chip U1 through a twenty-seventh resistor R27 and a twelfth capacitor C12 which are connected in series, and the pin 4 of the first control chip U1 is used for outputting 5V direct-current voltage; the negative electrode of the second filter capacitor EC2, the other end of the thirteenth capacitor C13 and the pin 2 and the pin 6 of the first control chip U1 are respectively grounded; the model of the first control chip U1 is PL8310SOT23-6.
In this embodiment, decoupling is achieved by providing the second filter capacitor EC2 and the thirteenth capacitor C13 on the input pin of the first control chip U1, and noise on the input pin of the first control chip U1 is eliminated.
Further, referring to fig. 1,3 and 4, the detecting unit 2 includes a water temperature detecting portion 21, a water quality detecting portion 22, a water level detecting portion 23 and a position detecting portion 24 electrically connected to the main control unit 1, wherein the water temperature detecting portion 21 is used for detecting the water temperature of the heat pipe, the water inlet water temperature and the water temperature of the cold water, the water quality detecting portion 22 is used for detecting the water quality of raw water and the water quality of pure water, the water level detecting portion 23 is used for detecting the water level of the pure water tank, the water level of the cold water tank, the water level of the raw water tank and the water level of the waste water tank, and the position detecting portion 24 is used for detecting the placement position of the raw water tank.
Further, referring to fig. 1,3 and 4, the water temperature detecting portion 21 includes a first water temperature detecting group and a second water temperature detecting group electrically connected to the main control unit 1, where the first water temperature detecting group is used for detecting the outlet water temperature and the inlet water temperature of the heat pipe, and the second water temperature detecting group is used for detecting the cold water temperature; the water level detection part 23 comprises a first water level detection group, a second water level detection group and a third water level detection group which are respectively and electrically connected with the main control unit 1, wherein the first water level detection group is used for realizing water level detection of a pure water tank, the second water level detection group is used for realizing water level detection of a cold water tank, and the third water level detection group is used for realizing low water level detection of a raw water tank and high water level detection of a waste water tank.
In this embodiment, referring to fig. 3 and 4, the first water temperature detection set includes a first temperature connector NTC1, a pin 1 of the first temperature connector NTC1 is connected to a pin 18 and a pin 9 of the second control chip U2, a pin 3 of the first temperature connector NTC1 is connected to a pin 11 and a pin 9 of the second control chip U2, and a pin 2 and a pin 4 of the first temperature connector NTC1 are grounded; the first temperature connector NTC1 is used for acquiring the water outlet temperature and the water inlet temperature of the heat pipe; the second water temperature detection group comprises a second temperature connector NTC2, a pin 1 of the second temperature connector NTC2 is respectively connected with a pin 12 and a pin 9 of the second control chip U2, a pin 2 of the second temperature connector NTC2 is grounded, and the second temperature connector NTC2 is used for acquiring cold water temperature.
In this embodiment, the first temperature connector NTC1 obtains the outlet water temperature and inlet water temperature of the instant heat pipe, and feeds back temperature information to the main control unit 1 through the first water temperature detection group, so as to provide reference data for voltage regulation of the instant heat pipe.
In this embodiment, referring to fig. 3 and 4, the water quality detecting unit 22 includes a seventh connector CN7, where a pin 4 of the seventh connector CN7 is connected to a pin 20 of the second control chip U2, a pin 3 of the seventh connector CN is connected to a pin 16 and a pin 29 of the second control chip U2, a pin 2 of the seventh connector is connected to a pin 17 of the second control chip U2, and a pin 1 of the seventh connector is connected to a pin 15 and a pin 30 of the second control chip U2, respectively; the seventh connector CN7 is used for obtaining the water quality of the water body in the pure water tank and the water quality of the water body in the original water tank respectively.
In this embodiment, referring to fig. 3 and 4, the first water level detection set includes a fifteenth connector CN15, a pin 1 of the fifteenth connector CN15 is connected to a pin 7 and a pin 35 of the second control chip U2, a pin 3 of the fifteenth connector CN15 is connected to a pin 7 and a pin 34 of the second control chip U2, a pin 2 and a pin 4 of the fifteenth connector CN15 are grounded, and the fifteenth connector CN15 is used for obtaining a water level of the cold water tank; the second water level detection group comprises a ninth connector CN9, a pin 1 and a pin 3 of the ninth connector CN9 are respectively connected with a pin 6 and a pin 5 of the second control chip U2, a pin 2 of the ninth connector CN9 is grounded, and the ninth connector CN9 is used for acquiring the water level of the pure water tank; the third water level detection group comprises an eleventh connector CN11, a pin 1 of the eleventh connector CN11 is respectively connected with a pin 7 and a pin 40 of the second control chip U2, a pin 3 of the eleventh connector CN11 is respectively connected with a pin 7 and a pin 42 of the second control chip U2, a pin 2 and a pin 4 of the eleventh connector CN11 are respectively grounded, and the eleventh connector CN11 is used for acquiring the low water level condition of the original water tank and the high water level condition of the waste water tank.
In this embodiment, referring to fig. 3 and 4, the position detecting portion 24 includes a fourteenth connector CN14, the pin 1 of the fourteenth connector CN14 is connected to the pin 7 and the pin 39 of the second control chip U2, respectively, and the pin 2 of the fourteenth connector CN14 is grounded; the fourteenth connector CN14 is configured to obtain a water tank position of the original water tank, so as to confirm whether the original water tank is installed in place and is installed correctly, thereby improving stability of the ice maker during operation.
Further, referring to fig. 1, 3 and 7, the instant heating unit 5 further includes a heating control portion 52 and a zero crossing detection portion 53, an input end of the heating control portion 52 is connected to the main control unit 1, and an output end of the heating control portion 52 is used for connecting with a silicon controlled small board of the ice maker; the input end of the zero-crossing detection part 53 is used for being connected with a temperature controller of the water purifying dispenser, and the output end of the zero-crossing detection part 53 is connected with the main control unit 1; the zero-crossing detection part 53 is used for realizing dry combustion alarm.
In this embodiment, referring to fig. 3 and 7, the heating control portion 52 includes a tenth triode Q10, a third control chip U3, and a first interface J1, a base electrode of the thirteenth triode Q10 is connected to the pin 31 of the second control chip U2, a collector electrode of the thirteenth triode Q10 is connected to the pin 2 of the third control chip U3, the pin 1 of the third control chip U3 is connected to the pin 7 of the second control chip U2, the pin 4 and the pin 6 of the third control chip U3 are respectively connected to the first interface J1, the first interface J1 is used for connecting a silicon controlled small board of the ice maker, the heating power of the heat pipe is adjusted by the silicon controlled small board, and the model number of the third control chip U3 is MOC3052.
In this embodiment, referring to fig. 3 and 7, the zero crossing detection portion 53 includes a fourth control chip U4, a pin 1 of the fourth control chip U4 is used for connecting with a temperature controller of the ice maker, a pin 2 of the fourth control chip U is connected with a live wire end of the heat pipe, a pin 3 of the fourth control chip U is connected with a pin 33 of the second control chip U2, and a pin 4 of the fourth control chip U is grounded; the model of the fourth control chip U4 is PC817C; in the working process of the instant heating pipe, dry heating alarm is realized through the zero crossing detection part 53, when a temperature controller connected with the zero crossing detection part 53 is disconnected, the situation that the ice machine lacks water and burns dry is indicated, the zero crossing detection part 53 feeds back an alarm signal to the main control unit 1, so that the working state of the ice machine can be timely adjusted by the second control chip U2, and the safety of the ice machine in working is improved.
Further, referring to fig. 1,3 and 5, the operation control unit 3 includes a plurality of first control portions 31, a plurality of second control portions 32, a boost control portion 33 and a fan control portion 34; the input ends of the plurality of first control parts 31 are respectively and electrically connected with the main control unit 1, and the output ends of the first control parts 31 are used for outputting control signals to a waste water valve or an ice removing valve or a drain valve or an ice making water pump of the water purifying and drinking machine; the input ends of the second control parts 32 are respectively and electrically connected with the main control unit 1, and the output ends of the second control parts 32 are used for outputting control signals to an instant heating water outlet pump or a cold water outlet pump of the water purifying and drinking machine; the input end of the pressurization control part 33 is electrically connected with the main control unit 1, and the output end of the pressurization control part 33 is used for outputting a control signal to a pressurization pump of the water purifying drinking machine; the input end of the fan control part 34 is electrically connected with the main control unit 1, and the output end of the fan control part 34 is used for outputting a control signal to the fan of the water purifying dispenser.
In this embodiment, referring to fig. 3 and 5, the operation control unit 3 includes five first control portions 31, and one first control portion 31 is connected to the pin 21 of the second control chip U2 for adjusting the operation state of the waste water valve of the ice maker; a first control part 31 is connected with the pin 25 of the second control chip U2 and is used for adjusting the working state of the ice removing valve of the ice maker; a first control part 31 is connected with the pin 26 of the second control chip U2 and is used for adjusting the working state of the drain valve of the ice machine; a first control part 31 is connected with the pin 2 of the second control chip U2 and is used for adjusting the working state of the ice making water pump; a first control part 31 is connected with the pin 3 of the second control chip U2 and is used for adjusting the working state of the ice making water pump.
Taking the first control portion 31 connected to the waste water valve as an example, the first control portion 31 includes a first diode D1, a first field effect transistor Q1, a third resistor R3 and an eighth resistor R8, where a negative electrode of the first diode D1 is connected to a 24V voltage provided by a power supply board, a negative electrode of the first diode D1 and a drain electrode of the first field effect transistor Q1 are respectively used to connect to the waste water valve, a gate electrode of the first field effect transistor Q1 is respectively connected to another end of the third resistor R3 and one end of the eighth resistor R8, another end of the third resistor R3 is connected to a pin 21 of the second control chip U2, and another end of the eighth resistor R8 and a source electrode of the first field effect transistor Q1 are respectively grounded.
In this embodiment, referring to fig. 3 and 5, the operation control unit 3 includes two second control portions 32, where one second control portion 32 is connected to the pin 19 and the pin 28 of the second control chip U2, respectively, and is used for adjusting the operation state of the heat pipe water outlet pump; a second control part 32 is respectively connected with the pin 14 and the pin 27 of the second control chip U2 and is used for adjusting the working state of the cold water outlet pump.
Taking the second control portion 32 connected to the heat pipe water outlet pump as an example, the second control portion 32 includes an eighth diode D8, a seventh field effect transistor Q7, a fifteenth resistor R15, a seventeenth resistor R17, and a seventeenth resistor R72, wherein a negative electrode of the eighth diode D8 is connected to a 24V voltage provided by a power supply board, a negative electrode of the eighth diode D8 and a drain electrode of the seventh field effect transistor Q7 are respectively used for connecting to the heat pipe water outlet pump, a gate electrode of the seventh field effect transistor Q7 is respectively connected to the other end of the fifteenth resistor R15 and one end of the seventeenth resistor R17, the other end of the fifteenth resistor R15 is connected to the pin 28 of the second control chip U2, a source electrode of the seventh field effect transistor Q7 is respectively connected to the pin 19 of the second control chip U2 and one end of the seventeenth resistor R72, and the other end of the seventeenth resistor R17 is respectively grounded.
In this embodiment, referring to fig. 3 and 5, the boost control portion 33 includes a first inductor L1, a first filter capacitor EC1, a fourth diode D10, a ninth field-effect transistor Q7, a nineteenth resistor R19, and a twenty-fifth resistor R25, wherein a negative electrode of the first filter capacitor EC1 and one end of the first inductor L1 are respectively used for connecting a booster pump of the ice maker and a pin 13 connected to the second control chip U2, a positive electrode of the first filter capacitor EC1 and a negative electrode of the tenth diode D10 are respectively used for connecting a 24V voltage of a power supply board, a positive electrode of the twelfth diode D10 and the other end of the first inductor L1 are respectively connected with a drain electrode of the ninth field-effect transistor Q9, a gate electrode of the ninth field-effect transistor Q9 is respectively connected with the other end of the nineteenth resistor R19 and one end of the twenty-fifth resistor R25, and a source electrode of the ninth field-effect transistor Q9 and the other end of the twenty-fifth resistor R25 are respectively grounded; one end of the nineteenth resistor R19 is connected to the pin 41 of the second control chip U2.
In this embodiment, the boost control portion 33 includes a first inductor L1 and a first filter capacitor EC1, which can filter out high-frequency noise generated to the circuit during operation of the booster pump, so as to improve the stability of the control circuit during operation.
In this embodiment, referring to fig. 3 and 5, the fan control unit 34 is used for adjusting the working state of the fan of the ice maker to realize the cooling of the compression mechanism; the fan control part 34 includes a thirteenth connector CN13 and a fifteenth triode Q15, where a pin 2 of the thirteenth connector CN13 is connected to a 24V output end of the power board, a pin 1 of the thirteenth connector CN13 is connected to a collector of the fifteenth triode Q15, a base of the fifteenth triode Q15 is connected to a pin 43 of the second control chip U2, and an emitter of the fifteenth triode Q15 is grounded.
Further, referring to fig. 1,3 and 5, the operation control unit 3 further includes an ultraviolet control unit 35, the ultraviolet control unit 35 includes a first ultraviolet control group and a second ultraviolet control group, the input end of the first ultraviolet control group and the input end of the second ultraviolet control group are respectively electrically connected with the main control unit 1, and the output end of the first ultraviolet control group and the output end of the second ultraviolet control group are used for outputting control signals to ultraviolet lamps corresponding to the water purifying machine.
In this embodiment, referring to fig. 3 and 5, the circuit structures of the first ultraviolet control group and the second ultraviolet control group are the same, the first ultraviolet control group is connected to the pin 38 of the second control chip U2, and the second ultraviolet control group is connected to the pin 36 of the second control chip U2; the first ultraviolet control group comprises a second connector CN2 and a sixth triode Q6, a pin 2 of the second connector CN2 is connected with a 24V output end of the power panel, a pin 1 of the second connector CN2 is connected with a collector electrode of the sixth triode Q6, a base electrode of the sixth triode Q6 is connected with a pin 38 of the second control chip U2, and an emitter electrode of the sixth triode Q6 is grounded.
In this embodiment, the ultraviolet control part 35 is provided, which can realize the ultraviolet disinfection function, improve the quality of ice cubes made by the ice maker, and avoid the threat of ice cubes to the physical health of users.
Further, referring to fig. 1 and 3, the main control unit 1 includes a second control chip U2 and a timing portion 11, and the timing portion 11, the detecting unit 2, the working control unit 3, the switching unit 4, and the instant heating unit 5 are electrically connected to the second control chip U2 respectively.
In this embodiment, the model number of the second control chip U2 is MM32F0131C6P LQFP48; the timing part 11 is connected with the pin 5 and the pin 6 of the second control chip U2 and is used for realizing the timing function of the ice maker.
The invention also correspondingly provides a PCB board, and the control circuit of the ice maker is printed on the PCB board.
The invention also correspondingly provides an ice maker, which comprises an electric control assembly, wherein the electric control assembly comprises the PCB.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (9)
1. The control circuit of the ice machine is characterized by comprising a main control unit, a detection unit, a work control unit, a switch unit and an instant heating unit, wherein the detection unit, the work control unit, the switch unit and the instant heating unit are respectively and electrically connected with the main control unit, the switch unit comprises a filter part and a plurality of switch parts, the filter part is respectively and electrically connected with the main control unit, the switch parts are used for adjusting the switch state of an electromagnetic valve or a motor of the ice machine, and the switch parts are respectively connected with the filter part; the instant heating unit comprises a voltage detection part which is respectively connected with the main control unit and the filtering part, and the voltage detection part is used for feeding back the voltage between the instant heating pipe fire wire end and the zero wire end to the main control unit through a voltage transformer T1 so as to realize voltage calibration;
The main control unit comprises a second control chip U2, and the detection unit, the working control unit, the switch unit and the instant heating unit are respectively and electrically connected with the second control chip U2;
The filter unit includes a twenty-ninth capacitor C29, a sixty-first resistor R61, a sixty-second resistor R62, a sixty-third resistor R63, a varistor ZNR1, and a fuse F1, wherein one end of the twenty-ninth capacitor C29, one end of the sixty-first resistor R61, one end of the varistor ZNR1, and one end of the fuse F1 are respectively connected with the live wire end of the live wire pipe and the input end of the voltage detection unit, and the other end of the twenty-ninth capacitor C29, the other end of the sixty-third resistor R63, and the other end of the varistor ZNR1 are respectively connected with the live wire end of the live wire pipe and the input end of the voltage detection unit; the sixty-first resistor R61, the sixty-second resistor R62 and the sixty-third resistor R63 are sequentially connected in series;
the voltage detection part comprises a voltage transformer T1 and a twenty-ninth capacitor C29, wherein a pin 1 of the voltage transformer T1 is connected with one end of the twenty-ninth capacitor C29 and is used for being connected with a live wire end of a heat pipe; the pin 3 of the voltage transformer T1 is connected with the other end of the twenty-ninth capacitor C29 and is used for connecting a zero line end of a heat pipe; the pin 2 and the pin 4 of the voltage transformer T1 are respectively connected with the pin 10 and the pin 9 of the second control chip U2;
The instant heating unit further comprises a heating control part, wherein the input end of the heating control part is connected with the main control unit, and the output end of the heating control part is used for being connected with a silicon controlled small plate of the ice machine;
Specifically, the heating control portion includes a tenth triode Q10, a third control chip U3 and a first interface J1, a base electrode of the thirteenth triode Q10 is connected with a pin 31 of the second control chip U2, a collector electrode of the thirteenth triode Q10 is connected with a pin 2 of the third control chip U3, a pin 1 of the third control chip U3 is connected with a pin 7 of the second control chip U2, a pin 4 and a pin 6 of the third control chip U3 are respectively connected with the first interface J1, and the first interface J1 is used for connecting a silicon controlled small plate of an ice maker, and heating power of a heat pipe is adjusted through the silicon controlled small plate.
2. The control circuit of an ice maker according to claim 1, further comprising a step-down unit, wherein an input end of the step-down unit is connected to a 24V output end of a power panel of the ice maker, an output end of the step-down unit is electrically connected to the main control unit, the detection unit and the instant heating unit, respectively, and an output end of the step-down unit is used for providing a direct current supply voltage of 5V.
3. The control circuit of an ice maker as claimed in claim 1, wherein said detecting unit includes a water temperature detecting part, a water quality detecting part, a water level detecting part and a position detecting part electrically connected to said main control unit, respectively; the water temperature detection part comprises a first water temperature detection group and a second water temperature detection group which are respectively and electrically connected with the main control unit, the first water temperature detection group is used for detecting the water outlet temperature and the water inlet temperature of the heat pipe, and the second water temperature detection group is used for detecting the temperature of cold water; the water level detection part comprises a first water level detection group, a second water level detection group and a third water level detection group which are respectively and electrically connected with the main control unit, wherein the first water level detection group is used for realizing the water level detection of the pure water tank, the second water level detection group is used for realizing the water level detection of the cold water tank, and the third water level detection group is used for realizing the low water level detection of the original water tank and the high water level detection of the waste water tank; the water quality detection part is used for detecting raw water quality and pure water quality, and the position detection part is used for detecting the placing position of the raw water tank.
4. The control circuit of an ice maker according to claim 1, wherein said instant heating unit further comprises a zero crossing detection portion, an input end of said zero crossing detection portion is used for connecting a temperature controller of a water purifying dispenser, and an output end of said zero crossing detection portion is connected with said main control unit; the zero crossing detection part is used for realizing dry combustion alarm.
5. The control circuit of an ice maker of claim 1, wherein said operation control unit comprises a plurality of first control portions, a plurality of second control portions, a boost control portion, a fan control portion, and an ultraviolet control portion; the input ends of the plurality of first control parts are respectively and electrically connected with the main control unit, and the output ends of the first control parts are used for outputting control signals to a waste water valve or an ice removing valve or a drain valve or an ice making water pump of the purified water dispenser; the input ends of the second control parts are respectively and electrically connected with the main control unit, and the output ends of the second control parts are used for outputting control signals to an instant heating water outlet pump or a cold water outlet pump of the water purifying and drinking machine; the input end of the pressurizing control part is electrically connected with the main control unit, and the output end of the pressurizing control part is used for outputting a control signal to a pressurizing pump of the water purifying and drinking machine; the input end of the fan control part is electrically connected with the main control unit, and the output end of the fan control part is used for outputting a control signal to a fan of the water purifying and drinking machine; the ultraviolet control part comprises a first ultraviolet control group and a second ultraviolet control group, the input end of the first ultraviolet control group and the input end of the second ultraviolet control group are respectively and electrically connected with the main control unit, and the output end of the first ultraviolet control group and the output end of the second ultraviolet control group are used for outputting control signals to ultraviolet lamp tubes corresponding to the water purifying and drinking machine.
6. The control circuit of an ice maker as claimed in claim 1, wherein said main control unit further comprises a timing part electrically connected to said second control chip U2.
7. The control circuit of an ice maker according to claim 4, wherein said zero crossing detecting section includes a fourth control chip U4, a pin 1 of said fourth control chip U4 is used for connecting a temperature controller of the ice maker, a pin 2 of said fourth control chip U4 is used for connecting a hot wire end of a heat pipe, a pin 3 of said fourth control chip U4 is connected with a pin 33 of said second control chip U2, and said fourth control chip U4 pin 4 is grounded.
8. A PCB board having printed thereon the control circuit of the ice maker of any one of claims 1-7.
9. An ice-making machine comprising an electronic control assembly comprising the PCB board of claim 8.
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| CN202311305819.4A CN117111533B (en) | 2023-10-09 | 2023-10-09 | Control circuit of ice machine, PCB and ice machine |
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| CN202311305819.4A CN117111533B (en) | 2023-10-09 | 2023-10-09 | Control circuit of ice machine, PCB and ice machine |
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| CN117111533B true CN117111533B (en) | 2024-05-14 |
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