CN102620495A - Ice-making control method and ice-making system - Google Patents
Ice-making control method and ice-making system Download PDFInfo
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- CN102620495A CN102620495A CN2012101000141A CN201210100014A CN102620495A CN 102620495 A CN102620495 A CN 102620495A CN 2012101000141 A CN2012101000141 A CN 2012101000141A CN 201210100014 A CN201210100014 A CN 201210100014A CN 102620495 A CN102620495 A CN 102620495A
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Abstract
The invention relates to an ice-making control method and an ice-making system. The ice-making control method adopts a power distribution program to lead a refrigerating chip to be used for matching with a fluctuating portion of input power and lead evaporators to be used for matching with a stable portion of the input power, and then a variable-frequency compressor has a process of gradually exiting an operating state and gradually transferring consumed power to the refrigerating chip so as to be protected. The ice-making system adopts the ice-making control method, and comprises a water tank, the refrigerating chip, a liquid storage tank, a condenser, the variable-frequency compressor, an electric quantity acquisition module, a controller and N evaporation branches. Each evaporation branch comprises a first electromagnetic valve, a first one-way valve and an evaporator group, and each evaporator group comprises the evaporator and an ice-making tray. The ice-making system is applicable to variable power input occasions, match of efficiency power with variable input power in an ice-making process can be realized, and energy use ratio is increased.
Description
Technical field
The invention belongs to the ice making field, be specifically related to a kind of ice making control method and ice-making system that becomes the power input that adapt to.
Background technology
China has abundant marine energy resources, can the ocean energy of catching be converted into electric energy output through the power generation with marine energy device.For the offshore islands of also not laying electrical network, the power delivery that ocean current energy generator is sent is too high to the cost of electrical network (being that ocean current energy generator is incorporated into the power networks), and is difficult to carry out; The fishery of considering offshore islands is bigger with the ice amount, need to consume a large amount of energy, can the electric energy that ocean current energy generator sends be utilized on the spot, for the fishery of locality provides the energy, is used for ice making.
Because ocean energy has intermittent characteristics, correspondingly, the power output of power generation with marine energy device demonstrates the characteristic of intermittent fluctuation.Accompanying drawing 1 is depicted as existing ice-making system, and this ice-making system adopts invariable frequency compressor 18, and invariable frequency compressor 18 needs enough power inputs when work.If the power generation with marine energy device is as the power generator of this ice-making system; For this ice-making system; Intermittent power input can cause the defective of following several respects: if the input power excursion of 1 ice-making system is too big, when input power at short notice when bigger value changes to very little value, the output torque that drives the motor of invariable frequency compressor can be very little; So that motor can't drive invariable frequency compressor, cause the invariable frequency compressor stall to burn.If when the input power of 2 ice-making systems continued to hang down, the motor that drives invariable frequency compressor can't start compressor, makes motor rotation blockage, can cause the stall of invariable frequency compressor equally.If the speed of 3 invariable frequency compressors reduces, the flow of cold-producing medium will reduce, and the lack of refrigerant of the evaporimeter of flowing through comes thereby can not make ice so that the temperature of evaporimeter reaches the ice making temperature point.
If use above-mentioned ice-making system; The power generation with marine energy device that matches just needs to adopt permanent power output control; Export constant power supply ice-making system, this just causes the reduction of exploitation of marine energy rate, and the power generation with marine energy device just can not be caught peak power; Thereby can not realize the energy-conservation energy storage pattern of " what come can send out how many electricity, send out how many how many ice of electricity system ".
Summary of the invention
The technical problem that the present invention will solve provides a kind of ice making control method and ice-making system; Make ice-making system not need constant input power; Thereby go for becoming the occasion of power input, realize the coupling of the input power of ice-making process consumed power and variation.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of ice making control method, ice-making system use cooling piece that the water in the water tank is freezed, and cold-producing medium flows in frequency-changeable compressor, condenser, evaporimeter and fluid reservoir, uses N evaporimeter that water is processed ice, and N is the natural number more than or equal to 2.Use electric quantity acquisition module to detect the input power of ice-making system, detected input power size is performance number M, and controller is according to the big or small starting power allocator of this detected performance number M.The rated power of single evaporimeter is P, and controller preestablishes two power grades and is respectively P
1And P
2, and P
1＜P
2, P＜P
2-P
1The power division program is described below:
1) when ice-making system starts beginning, if performance number M is smaller or equal to P
2, controller starts cooling piece, and whole energy of input ice-making system are supplied with cooling piece, in advance the water in the water tank is freezed by cooling piece.According to control algolithm, through performance number M is calculated, controller is exported the PWM ripple and is done processing and amplifying through the processing and amplifying module; The break-make of electric current in the control cooling piece; Make cooling piece consumed power and performance number M be complementary, at this moment, cooling piece is in the refrigeration work state.
2) after ice-making system starts, if performance number M is greater than P
2, controller starts the motor of drive variable frequency compressor, and behind the electric motor starting, evaporator operation is at the rated power state, and the number that is in the evaporimeter of ice making duty is W, and W equals
Integer part.Cooling piece also is in the refrigeration work state simultaneously, controller control cooling piece consumed power and the dump power (M-W * P) be complementary that imports ice-making system.
If performance number M is from P
2And P
2More than drop to P
1, the motor speed of controller output square-wave pulse control drive variable frequency compressor is reduced to zero gradually, thereby controls the rotating speed of frequency-changeable compressor indirectly, and at this moment, the evaporimeter that is in the ice making duty is not operated in rated power.Simultaneously, be reduced to gradually in the zero process at motor speed, remaining power consumption was fallen after controller control cooling piece deducted the evaporimeter consumed power with performance number M.
Adopt the ice-making system of above-mentioned ice making control method; Comprise water tank, fluid reservoir and condenser; Said ice-making system also comprises second check valve, two-bit triplet magnetic valve, second magnetic valve, electric expansion valve, frequency-changeable compressor and N road evaporation branch road, and N is the natural number more than or equal to 2.Every road evaporation branch road comprises first magnetic valve, first check valve and one group of evaporator bank, and every group of said evaporator bank comprises evaporimeter and ice-making disc.The said evaporation branch road on every road, the import of said first check valve connects the outlet of said evaporimeter through pipeline, and the import of said evaporimeter connects the outlet of said first magnetic valve through pipeline.The outlet of said fluid reservoir is connected through pipeline with the import of said frequency-changeable compressor; The import of said fluid reservoir is connected through the outlet of pipeline with first check valve of the said evaporation branch road in every road, and the outlet of said second check valve is connected through the import of pipeline with first magnetic valve of the said evaporation branch road in every road.
The C mouth of said two-bit triplet magnetic valve is connected with the outlet of said frequency-changeable compressor through pipeline; The A mouth of said two-bit triplet magnetic valve is connected with the import of condenser through pipeline, and the B mouth of said two-bit triplet magnetic valve is connected through the import of pipeline with second magnetic valve.The outlet of said condenser connects the import of electric expansion valve through pipeline, and the outlet of said electric expansion valve connects the import of second check valve through pipeline, and the outlet of said second magnetic valve connects the outlet of second check valve through pipeline.
Said water tank is connected with the ice-making disc of every group of evaporator bank through pipeline, and said evaporimeter and ice-making disc are integral structure.Said ice-making system also comprises cooling piece, controller and electric quantity acquisition module; Said water tank and cooling piece are integral structure; Said electric quantity acquisition module and controller are electrically connected together, and said controller comprises that to frequency-changeable compressor, two-bit triplet magnetic valve, second magnetic valve, electric expansion valve and every road evaporation branch road first magnetic valve controls respectively.
Further; The C mouth of said two-bit triplet magnetic valve is connected through first stop valve with the outlet of frequency-changeable compressor indirectly; The outlet of said first stop valve connects the C mouth of said two-bit triplet magnetic valve through pipeline, and the import of said first stop valve connects the outlet of frequency-changeable compressor through pipeline.Said fluid reservoir is connected through second stop valve with frequency-changeable compressor indirectly, and the import of said second stop valve is through the outlet of pipeline connection fluid reservoir, and the outlet of said second stop valve connects the import of frequency-changeable compressor through pipeline.
Further, on condenser and pipeline that electric expansion valve is connected, be provided with filter, the outlet of said condenser connects the import of filter through pipeline, and the outlet of said filter connects the import of electric expansion valve through pipeline.
Further, be provided with first temperature sensor, in said water tank, be provided with second temperature sensor in the exit of said second check valve.
Adopt the present invention to have following beneficial effect:
1, the present invention can not consider the size and the fluctuation range of ice-making system input power, and the power generation with marine energy device that is connected with ice-making system can adopt maximal power tracing control, thereby can catch peak power, improves capacity usage ratio.
2, the present invention crosses lowly can't the drive variable frequency compressor time in input power, matees input power through cooling piece, and cooling piece can freeze to the water of water tank in advance, can make evaporimeter ice making more quickly, improves ice making efficient.
3, the present invention is when input power is higher; Adopt multichannel evaporation branch road; Through controlling the quantity and the cooling piece of the evaporation branch road that drops into ice-making process, by the power of evaporimeter coupling steady component, by cooling piece coupling fluctuation power partly; Realize the coupling of ice-making process consumed power and ice-making system input power, improve capacity usage ratio.
Description of drawings
Do further detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is a kind of fundamental diagram of existing ice-making system;
Fig. 2 is the control principle flow chart of a kind of ice making control method of the present invention embodiment;
Fig. 3 is the fundamental diagram of ice-making system embodiment of the present invention.
The specific embodiment
With reference to accompanying drawing 2.A kind of ice making control method, ice-making system use cooling piece that the water in the water tank is freezed, and cold-producing medium flows in frequency-changeable compressor, condenser, evaporimeter and fluid reservoir, uses N evaporimeter that water is processed ice, and N is the natural number more than or equal to 2.Use electric quantity acquisition module to detect the input power of ice-making system, detected input power size is performance number M, and controller is according to the big or small starting power allocator of this detected performance number M.The rated power of single evaporimeter is P, and controller preestablishes two power grades and is respectively P
1And P
2, and P
1＜P
2, P＜P
2-P
1
The power division program is described below:
1) when ice-making system starts beginning, if performance number M is smaller or equal to P
2, controller starts cooling piece, and whole energy of input ice-making system are supplied with cooling piece, in advance the water in the water tank is freezed by cooling piece.Through performance number M is calculated, controller is exported the PWM ripple and is done processing and amplifying through the processing and amplifying module, and the break-make of electric current makes cooling piece consumed power and performance number M be complementary in the control cooling piece, and at this moment, cooling piece is in the refrigeration work state.
2) after ice-making system starts, if performance number M is greater than P
2, controller starts the motor of drive variable frequency compressor, and behind the electric motor starting, evaporator operation is at the rated power state, and the number that is in the evaporimeter of ice making duty is W, and W equals
Integer part.Cooling piece also is in the refrigeration work state simultaneously, controller control cooling piece consumed power and the dump power (M-W * P) be complementary that imports ice-making system.
If performance number M is from P
2And P
2More than drop to P
1, the motor speed of controller output square-wave pulse control drive variable frequency compressor is reduced to zero gradually, thereby controls the rotating speed of frequency-changeable compressor indirectly.At this moment,, reduce, make the evaporimeter that is in the ice making duty not be operated in rated power from frequency-changeable compressor flow out, the flow through refrigerant flow of condenser and electric expansion valve, inflow evaporator because motor speed reduces gradually.Simultaneously, be reduced to gradually in the zero process at motor speed, remaining power consumption was fallen after controller control cooling piece deducted the evaporimeter consumed power with performance number M.The opening degree size of controller output pulse control electric expansion valve, the output pressure of control electric expansion valve, thus realize temperature control to the cold-producing medium that flows out electric expansion valve.
In the above-mentioned power division program, cooling piece is used to mate the fluctuation part of input power, and evaporimeter is used to mate the steady component of input power.Simultaneously, this power division program makes frequency-changeable compressor have the state of deactivating gradually, a frequency-changeable compressor consumed power to transfer to the process on the cooling piece gradually, thereby has protected frequency-changeable compressor.
With reference to accompanying drawing 3.The invention discloses a kind of ice-making system that adopts above-mentioned ice making control method; This ice-making system comprises water tank 23, fluid reservoir 21, condenser 25, frequency-changeable compressor 28, second check valve 27, two-bit triplet magnetic valve 29, second magnetic valve 30, electric expansion valve 31 and three tunnel evaporation branch roads; The said evaporation branch road in every road comprises first magnetic valve 241, first check valve 243 and one group of evaporator bank, and every group of said evaporator bank comprises evaporimeter 242 and ice-making disc 244.
Said frequency-changeable compressor 28 is connected with the C mouth of said two-bit triplet magnetic valve 29 through first stop valve 221; The outlet of said first stop valve 221 connects the C mouth of said two-bit triplet magnetic valve 29 through pipeline, and the import of said first stop valve 221 connects the outlet of frequency-changeable compressor 28 through pipeline.Said frequency-changeable compressor 28 is connected with said fluid reservoir 21 through second stop valve 222, and the import of said second stop valve 222 is through the outlet of pipeline connection fluid reservoir 21, and the outlet of said second stop valve 222 connects the import of frequency-changeable compressor 28 through pipeline.
The A mouth of said two-bit triplet magnetic valve 29 is connected through the import of pipeline with condenser 25; Said condenser 25 is connected with electric expansion valve 31 through filter 26; The outlet of said condenser 25 is through the import of pipeline connection filter 26, and the outlet of said filter 26 connects the import of electric expansion valve 31 through pipeline.The B mouth of said two-bit triplet magnetic valve 29 is connected through the import of pipeline with second magnetic valve 30; The outlet of said electric expansion valve 31 connects the import of second check valve 27 through pipeline; The outlet of said second magnetic valve 30 connects the outlet of second check valve 27 through pipeline, the purpose that adopts said second check valve 27 be avoid evaporating be gaseous state and liquid amalgam simultaneously in the device 242 back flow of refrigerant to electric expansion valve 31.
The said evaporation branch road on every road; The import of said first check valve 243 connects the outlet of said evaporimeter 242 through pipeline; The import of said evaporimeter 242 connects the outlet of said first magnetic valve 241 through pipeline; Adopt the purpose of said first check valve 243 to be, when a certain road evaporation branch road was in not on-state, the back flow of refrigerant of branch road that road evaporation branch road to above-mentioned not conducting was evaporated on other road that prevents to flow through.The import of said fluid reservoir 21 is connected through the outlet of pipeline with first check valve 243 of the said evaporation branch road in every road, and the outlet of said second check valve 27 is connected through the import of pipeline with first magnetic valve 241 of the said evaporation branch road in every road.
Said water tank 23 is connected with the ice-making disc 244 of every group of evaporator bank through pipeline; Said evaporimeter 242 is an integral structure with ice-making disc 244; Said ice-making disc 244 is to be made by corrosion resistant plate, and said evaporimeter 242 is weldingly fixed on the back side of said ice-making disc 244.Said ice-making system also comprises cooling piece 11, controller 12 and electric quantity acquisition module 13, and said water tank 23 is an integral structure with cooling piece 11, and said ice making sheet 11 is fixedly mounted on the sidewall of water tank 23 outsides.One end of said cooling piece 11 is a refrigeration end, and it is inner and contact with water in the water tank that said refrigeration end stretches into water tank 23.The other end of said cooling piece 11 is a radiating end, and said radiating end place is provided with a fan.The refrigeration end and the radiating end of said cooling piece 11 are heat exchanging fin, and the effect of refrigeration end is that the heat that absorbs the water in the water tank is delivered to radiating end, radiating end heat radiation under the effect of brushing of fan, the refrigeration of the water in 11 pairs of water tanks of realization cooling piece.
Said electric quantity acquisition module 13 is electrically connected with controller 12, and said electric quantity acquisition module 13 can detect the size of the power of input ice-making system, and with detected performance number input controller 12.Existing product on the said electric quantity acquisition module 13 employing markets; Can select Jiangsu China to survey the single-phase electric quantity acquisition module of HC-31A that electronics corporation produces; This product is the product that measurement is used to electrical parameter of Highgrade integration, accurately parameters such as measuring voltage, electric current, effective power, reactive power, power factor, active electrical degree and idle electric degree.Said controller 12 adopts the PLC modules as agent structure, and said controller 12 is controlled first magnetic valve 241 of the motor of drive variable frequency compressor 28, two-bit triplet magnetic valve 29, second magnetic valve 30, electric expansion valve 31, the said evaporation branch road of cooling piece 11 and every road respectively.
Be provided with first temperature sensor 141 in the exit of said second check valve 27; The purpose that adopts said first temperature sensor 141 is to detect the temperature value of the cold-producing medium of evaporation branch road import department; Controller 12 will judge that this temperature value is whether greater than the maximum temperature values of predefined said evaporation branch road import department; Whether decision starts cooling process to controller 12 according to judged result, makes this temperature value be reduced to rational numerical.In said water tank 23, be provided with second temperature sensor 142, the purpose that adopts said second temperature sensor 142 is to detect the temperature value of water in the water tank 23.
The operation principle of a kind of ice-making system of the present invention is:
Circulation has cold-producing medium in the pipeline of said ice-making system.Cold-producing medium flows out first stop valve 221 of flowing through through the gas of frequency-changeable compressor 28 compressions becoming HTHP from frequency-changeable compressor 28.When said two-bit triplet magnetic valve 29 is operated in right position, when the C mouth of said two-bit triplet magnetic valve 29 is communicated with the A mouth, the cold-producing medium that flows out from the said first stop valve 221 two-bit triplet magnetic valve 29 entering condensers 25 of flowing through.Be under the cooling effect of the cooling medium of cold-producing medium in condenser 25 of HTHP gaseous form; Cold-producing medium becomes the liquid of low-pressure low-temperature; The cold-producing medium that is the low-pressure low-temperature liquid form that from condenser 25, flows out, the filter 26 of flowing through, electric expansion valve 31 and second check valve 27 get into the evaporation branch road.
Which evaporation branch road cold-producing medium specifically gets into, by the conducting state decision of first magnetic valve 241 of the said evaporation branch road in every road.When first magnetic valve, 241 conductings of the said evaporation branch road in a certain road, this road evaporation branch road is in conducting state, and cold-producing medium gets into the said evaporation branch road in this road, and the ice making flow process that this road is in the evaporation branch road of conducting state is:
Water in the water tank 23 flows in the said ice-making disc 244; Cold-producing medium first magnetic valve 241 of flowing through gets into evaporimeters 242; Build-up ice under the sweat cooling effect of the cold-producing medium of water in said evaporimeter 242, the heat that cold-producing medium has absorbed water in the ice-making disc 244 becomes gas, afterwards; Cold-producing medium flows out evaporimeter 242, and first check valve 243 of flowing through gets into fluid reservoir 21 and stores.After said process finished, control two-bit triplet magnetic valve 29 was operated in position, a left side, made the C mouth of two-bit triplet magnetic valve 29 and B mouth be communicated with, and the cold-producing medium that flows out from first stop valve 221 directly gets into this road evaporation branch road, realizes the process that deices of ice-making disc 244.
When first magnetic valve 241 of the said evaporation branch road in a certain road not during conducting, this road evaporation branch road is in not on-state, and cold-producing medium can not get into the said evaporation branch road in this road.
At this moment, a complete ice-making process finishes, and gets into next ice-making process, and promptly second stop valve 222 of flowing through of the cold-producing medium in the fluid reservoir 21 gets into frequency-changeable compressors 28, and cold-producing medium is compressed to the gas of HTHP in frequency-changeable compressor 28.
Claims (5)
1. ice making control method; It is characterized in that: ice-making system uses cooling piece that the water in the water tank is freezed; Cold-producing medium flows in frequency-changeable compressor, condenser, evaporimeter and fluid reservoir, uses N evaporimeter that water is processed ice, and N is the natural number more than or equal to 2; Use electric quantity acquisition module to detect the input power of ice-making system, detected input power size is performance number M, and controller is according to the big or small starting power allocator of this detected performance number M; The rated power of single evaporimeter is P, and controller preestablishes two power grades and is respectively P
1And P
2, and P
1＜P
2, P＜P
2-P
1The power division program is described below:
1) when ice-making system starts beginning, if performance number M is smaller or equal to P
2, controller starts cooling piece, and whole energy of input ice-making system are supplied with cooling piece, in advance the water in the water tank is freezed by cooling piece; According to control algolithm, through performance number M is calculated, controller is exported the PWM ripple and is done processing and amplifying through the processing and amplifying module; The break-make of electric current in the control cooling piece; Make cooling piece consumed power and performance number M be complementary, at this moment, cooling piece is in the refrigeration work state;
2) after ice-making system starts, if performance number M is greater than P
2, controller starts the motor of drive variable frequency compressor, and behind the electric motor starting, evaporator operation is at the rated power state, and the number that is in the evaporimeter of ice making duty is W, and W equals
Integer part; Cooling piece also is in the refrigeration work state simultaneously, controller control cooling piece consumed power and the dump power (M-W * P) be complementary that imports ice-making system;
If performance number M is from P
2And P
2More than drop to P
1, the motor speed of controller output square-wave pulse control drive variable frequency compressor is reduced to zero gradually, thereby controls the rotating speed of frequency-changeable compressor indirectly, and at this moment, the evaporimeter that is in the ice making duty is not operated in rated power; Simultaneously, be reduced to gradually in the zero process at motor speed, remaining power consumption was fallen after controller control cooling piece deducted the evaporimeter consumed power with performance number M.
2. adopt the ice-making system of ice making control method according to claim 1; Comprise water tank (23), fluid reservoir (21) and condenser (25); It is characterized in that: said ice-making system also comprises second check valve (27), two-bit triplet magnetic valve (29), second magnetic valve (30), electric expansion valve (31), frequency-changeable compressor (28) and N road evaporation branch road, and N is the natural number more than or equal to 2; Every road evaporation branch road comprises first magnetic valve (241), first check valve (243) and one group of evaporator bank, and every group of said evaporator bank comprises evaporimeter (242) and ice-making disc (244); The said evaporation branch road on every road, the import of said first check valve (243) connects the outlet of said evaporimeter (242) through pipeline, and the import of said evaporimeter (242) connects the outlet of said first magnetic valve through pipeline; The outlet of said fluid reservoir (21) is connected through pipeline with the import of said frequency-changeable compressor (28); The import of said fluid reservoir (21) is connected through the outlet of pipeline with first check valve (243) of the said evaporation branch road in every road, and the outlet of said second check valve (27) is connected through the import of pipeline with first magnetic valve (241) of the said evaporation branch road in every road;
The C mouth of said two-bit triplet magnetic valve (29) is connected through the outlet of pipeline with said frequency-changeable compressor (28); The A mouth of said two-bit triplet magnetic valve (29) is connected through the import of pipeline with condenser (25), and the B mouth of said two-bit triplet magnetic valve (29) is connected through the import of pipeline with second magnetic valve (30); The outlet of said condenser (25) connects the import of electric expansion valve (31) through pipeline; The outlet of said electric expansion valve (31) connects the import of second check valve (27) through pipeline, and the outlet of said second magnetic valve (30) connects the outlet of second check valve (27) through pipeline;
Said water tank (23) is connected with the ice-making disc (244) of every group of evaporator bank through pipeline, and said evaporimeter (242) and ice-making disc (244) are integral structure; Said ice-making system also comprises cooling piece (11), controller (12) and electric quantity acquisition module (13); Said water tank (23) is an integral structure with cooling piece (11); Said electric quantity acquisition module (13) and controller (12) are electrically connected together, and said controller (12) evaporates branch road to frequency-changeable compressor (28), two-bit triplet magnetic valve (29), second magnetic valve (30), electric expansion valve (31) and every road respectively and comprises that first magnetic valve (241) controls.
3. according to the described ice-making system of claim 2; It is characterized in that: the C mouth of said two-bit triplet magnetic valve (29) is connected through first stop valve (221) with the outlet of frequency-changeable compressor (28) indirectly; The outlet of said first stop valve (221) connects the C mouth of said two-bit triplet magnetic valve (29) through pipeline, and the import of said first stop valve (221) connects the outlet of frequency-changeable compressor (28) through pipeline; Said fluid reservoir (21) is connected through second stop valve (222) with frequency-changeable compressor (28) indirectly; The import of said second stop valve (222) is through the outlet of pipeline connection fluid reservoir (21), and the outlet of said second stop valve (222) connects the import of frequency-changeable compressor (28) through pipeline.
4. according to claim 2 or 3 described ice-making systems; It is characterized in that: on condenser (25) and pipeline that electric expansion valve (31) is connected, be provided with filter (26); The outlet of said condenser (25) is through the import of pipeline connection filter (26), and the outlet of said filter (26) connects the import of electric expansion valve (31) through pipeline.
5. according to the described ice-making system of claim 4, it is characterized in that: be provided with first temperature sensor (141) in the exit of said second check valve (27), in said water tank (23), be provided with second temperature sensor (142).
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|---|---|---|---|
| CN 201210100014 CN102620495B (en) | 2012-04-06 | 2012-04-06 | Ice-making control method and ice-making system |
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|---|---|---|---|
| CN 201210100014 CN102620495B (en) | 2012-04-06 | 2012-04-06 | Ice-making control method and ice-making system |
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| WO2023279354A1 (en) * | 2021-07-09 | 2023-01-12 | Haier Us Appliance Solutions, Inc. | Evaporator for an ice making assembly |
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| CN107504733A (en) * | 2017-07-25 | 2017-12-22 | 浦江县酉泽水产科技有限公司 | A kind of automatical and efficient ice-making system |
| CN110927570A (en) * | 2018-09-20 | 2020-03-27 | 广东威灵电机制造有限公司 | Locked rotor detection method and device |
| WO2023279354A1 (en) * | 2021-07-09 | 2023-01-12 | Haier Us Appliance Solutions, Inc. | Evaporator for an ice making assembly |
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