CN115265066A - Refrigeration equipment control method and control device and refrigeration equipment - Google Patents
Refrigeration equipment control method and control device and refrigeration equipment Download PDFInfo
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- CN115265066A CN115265066A CN202210878469.XA CN202210878469A CN115265066A CN 115265066 A CN115265066 A CN 115265066A CN 202210878469 A CN202210878469 A CN 202210878469A CN 115265066 A CN115265066 A CN 115265066A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 246
- 238000000034 method Methods 0.000 title claims abstract description 70
- 239000012782 phase change material Substances 0.000 claims abstract description 72
- 238000010257 thawing Methods 0.000 claims abstract description 57
- 230000008023 solidification Effects 0.000 claims abstract description 26
- 238000007711 solidification Methods 0.000 claims abstract description 26
- 230000008018 melting Effects 0.000 claims abstract description 23
- 238000002844 melting Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 19
- 230000008901 benefit Effects 0.000 abstract description 15
- 230000000630 rising effect Effects 0.000 abstract description 5
- 239000000796 flavoring agent Substances 0.000 description 6
- 235000019634 flavors Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a refrigeration equipment control method, a control device and refrigeration equipment, relates to the field of refrigeration equipment and solves the problem of temperature fluctuation of a refrigeration house caused by defrosting of the refrigeration equipment in the prior art. The method comprises the following steps: acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment; comparing the current operating temperature of the refrigeration equipment with the preset operating temperature; and controlling the starting and stopping of the refrigeration equipment based on a comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in a valley power time period and a peak power time period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power time period and in a melting state in the peak power time period. When the refrigeration equipment carries out the defrosting process, the temperature of the refrigeration house can be prevented from rising to the upper limit of the food storage temperature, so that the stability of the temperature of the refrigeration house in the defrosting process can be improved; the control method of the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a refrigeration equipment control method, a control device and refrigeration equipment.
Background
The cold storage can be kept at a lower temperature all the time through the refrigeration equipment, and the food needs to be preserved in the cold storage in order to keep the original flavor of the food. In the refrigeration plant use, the inevitable problem of frosting appears, and the mode of electrical heating is usually adopted among the prior art to defrost the refrigeration plant, however, the mode of defrosting of current refrigeration plant leads to there being great fluctuation in freezer storehouse temperature. Specifically, heat generated by electric heating is dissipated into the refrigeration house, so that the temperature of the refrigeration house rises; when the refrigeration process is operated again after the defrosting of the refrigeration equipment is finished, the temperature of the storage is reduced.
The applicant found that when the temperature of the refrigerator is raised to the ice crystal melting temperature, the ice crystals melt, and when the temperature of the refrigerator is lowered to the freezing temperature of the ice crystals, the ice crystals are crystallized again. Therefore, the fluctuation of the temperature of the cold storage can destroy the microstructure of the food and influence the flavor of the food.
On the other hand, with the improvement of the electricity utilization system, the electricity prices of many urban residents have been put into practice in a time-of-use electricity price manner, and usually the electricity prices during the peak electricity period are higher than those during the valley electricity period to encourage peak-off electricity utilization. Refrigeration equipment for the refrigeration house needs to operate all year round, and the power consumption is large, so that the economic benefit of the refrigeration equipment is not high.
Therefore, it is urgently needed to provide a refrigeration equipment and a control method thereof, which can keep the temperature of the refrigeration house stable in the defrosting stage and can improve the economic benefit of the refrigeration equipment.
Disclosure of Invention
One of the purposes of the invention is to provide a refrigeration equipment control method, which solves the technical problem of temperature fluctuation of a refrigeration house caused by defrosting of the refrigeration equipment in the prior art. The technical effects that can be produced by the preferred technical scheme of the invention are explained in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the control method of the refrigeration equipment comprises the following steps:
acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment;
comparing the current operating temperature of the refrigeration equipment with a preset operating temperature;
and controlling the starting and stopping of the refrigeration equipment based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power time period and the peak power time period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power time period and to be in a melting state in the peak power time period.
According to a preferred embodiment, during the valley power period, the conditions for controlling the refrigeration equipment to be switched on are: t > T3－ΔTPresetAnd the condition for controlling the refrigeration equipment to be closed is as follows: t < T1；
In the peak power period, the conditions for controlling the refrigeration equipment to be started are as follows: t > T2And the conditions for controlling the refrigeration equipment to be closed are as follows: t < T3+ΔTPreset；
Wherein, T3Satisfies the following conditions: t is1＜T3＜T2；
T is the current operating temperature of the refrigeration equipment1Minimum temperature for food storage, T2Maximum temperature for food storage, T3Is the temperature at which the phase change material undergoes a phase change, Δ TPreset ofThe temperature difference is preset for the refrigeration house.
According to a preferred embodiment, the refrigeration appliance control method further includes the steps of:
acquiring a pressure signal of a phase-change material, the temperature of an evaporator in refrigeration equipment and the pressure of the evaporator;
and controlling the refrigeration equipment to enter a defrosting state based on the pressure signal of the phase-change material, the temperature of the evaporator and the pressure of the evaporator in a valley power period and a peak power period, and keeping the temperature of the refrigerator within a preset temperature range.
According to a preferred embodiment, during the valley power period, the evaporator temperature and the evaporator pressure at which the refrigeration equipment enters the defrosting state are controlled to satisfy:
△T1＞△T2and P is1＞P2；
Wherein, Δ T1And P1Respectively as follows: in the valley electricity time period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state; delta T2And P2Respectively as follows: and in the valley electricity time period, when the pressure signal of the phase-change material is a melting pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state.
According to a preferred embodiment, in the peak power period, the pressure signal of the phase-change material is a solidification pressure signal, and the evaporator temperature and the evaporator pressure when the refrigeration equipment enters the defrosting state are controlled to meet the following conditions:
△T3＜△T1and P is3＜P1；
Wherein, delta T1And P1Respectively as follows: in the valley electricity time period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state; delta T3And P3Respectively as follows: and in the peak power time period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state.
According to a preferred embodiment, in the peak power period, the pressure signal of the phase-change material is a melting pressure signal, and the refrigeration equipment is controlled to operate in a non-defrosting mode.
According to a preferred embodiment, during the valley electricity period, when the pressure signal of the phase-change material is a solidification-time pressure signal, the evaporator temperature and the evaporator pressure when the refrigeration equipment enters the defrosting state are controlled to meet the following conditions: t isReturn air－TAir supply≤△T1And P isLow pressure＜P1(ii) a When the pressure signal of the phase-change material is a melting pressure signal, controlling the evaporator temperature and the evaporator pressure of the refrigeration equipment in a defrosting state to meet the following requirements: t is a unit ofReturn air－TAir supply≤△T2And P isLow pressure＜P2(ii) a Wherein, TReturn airIs the return air temperature of the evaporator, TAir supplyFor the supply air temperature of the evaporatorDegree, PLow pressureThe low pressure end pressure of the evaporator.
According to a preferred embodiment, the peak power period, the pressure signal when the phase change material is in freezing, and the conditions for controlling the refrigeration device to enter the defrosting state during the peak power period are as follows: t isReturn air－TAir supply≤△T3And P isLow pressure＜P3(ii) a Wherein, TReturn airIs the return air temperature of the evaporator, TAir supplyIs the supply air temperature of the evaporator, PLow pressureThe low pressure end pressure of the evaporator.
The refrigeration equipment control method provided by the invention at least has the following beneficial technical effects:
according to the refrigeration equipment control method, the start and stop of the refrigeration equipment are controlled based on the comparison result of the current operation temperature of the refrigeration equipment and the preset operation temperature in the valley power period and the peak power period, the phase-change material in the refrigeration equipment is in a solidification state in the valley power period and is in a melting state in the peak power period, specifically, the defrosting process is controlled in the valley power period and the valley power period in a centralized manner, the phase-change material is in the solidification state and can store cold, and when the refrigeration equipment carries out the defrosting process, the heat dissipated to the refrigeration house can be counteracted through the cold stored by the phase-change material, so that the temperature of the refrigeration house is prevented from rising to the upper limit of the food storage temperature; in the peak power period, the phase-change material is in a melting state and can release cold energy, so that the refrigeration equipment can still enable the temperature of the refrigeration house to be within a preset temperature range when running at a higher temperature, the power consumption of the refrigeration equipment in the peak power period can be reduced, and the economic benefit of the refrigeration equipment can be improved.
Therefore, the control method of the refrigeration equipment can prevent the temperature of the refrigeration house from rising to the upper limit of the food storage temperature when the refrigeration equipment carries out the defrosting process, thereby improving the stability of the temperature of the refrigeration house during the defrosting process and preventing the flavor of food from being influenced. On the other hand, the control method of the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
A second object of the invention is to propose a control device for a refrigeration appliance.
The control device of the refrigeration equipment comprises an acquisition module, a comparison module and a control module, wherein,
the acquisition module is used for acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment;
the comparison module is used for comparing the current operating temperature of the refrigeration equipment with the preset operating temperature;
the control module is used for controlling the starting and stopping of the refrigeration equipment based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power period and the peak power period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power period and to be in a melting state in the peak power period.
The refrigeration equipment control device provided by the invention at least has the following beneficial technical effects:
the refrigeration equipment control device comprises an acquisition module, a comparison module and a control module, and when the refrigeration equipment carries out a defrosting process, the temperature of the refrigeration house can be prevented from rising to the upper limit of the food storage temperature through the functions of the acquisition module, the comparison module and the control module, so that the stability of the temperature of the refrigeration house in the defrosting process can be improved, and the influence on the flavor of food can be avoided. On the other hand, the control device of the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
A third object of the invention is to propose a refrigeration device.
The refrigeration equipment comprises a refrigeration unit, a phase-change material assembly and a controller, wherein the refrigeration unit forms a refrigerant loop, the phase-change material assembly is arranged in a refrigerator, the controller is connected with the refrigeration unit, and the controller is used for executing an executable program so as to realize the steps of the method of any technical scheme in the invention.
The refrigeration equipment provided by the invention at least has the following beneficial technical effects:
the refrigeration equipment comprises a refrigeration unit, a phase-change material assembly and a controller, wherein the controller is connected with the refrigeration unit and is used for executing an executable program so as to realize the steps of the method in any technical scheme of the invention. On the other hand, the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a preferred embodiment of a refrigeration unit control method of the present invention;
FIG. 2 is a flow chart of another preferred embodiment of the refrigeration unit control method of the present invention;
FIG. 3 is a block schematic diagram of a preferred embodiment of the refrigeration unit control of the present invention;
FIG. 4 is a block schematic diagram of a preferred embodiment of the refrigeration unit of the present invention;
figure 5 is a schematic diagram of a preferred embodiment of the refrigeration unit of the present invention.
In the figure: 11. an acquisition module; 12. a comparison module; 13. a control module; 21. a refrigeration unit; 211. an evaporator; 212. a four-way reversing valve; 213. a condenser; 214. a gas-liquid separator; 215. a compressor; 22. a phase change material component; 23. a controller; 31. a freezer storage rack; 32. the items are stored.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The method, the device and the refrigeration equipment of the present invention will be described in detail below with reference to fig. 1 to 5 and embodiments 1 to 3 of the specification.
Example 1
This embodiment describes a refrigeration apparatus control method according to the present invention in detail.
Fig. 1 is a flowchart illustrating a preferred embodiment of a method for controlling a refrigeration apparatus in this embodiment, and as shown in fig. 1, the method for controlling a refrigeration apparatus in this embodiment includes the following steps:
step 1: acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment;
step 2: comparing the current operating temperature of the refrigeration equipment with a preset operating temperature;
and step 3: and controlling the starting and stopping of the refrigeration equipment based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power time period and the peak power time period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power time period and to be in a melting state in the peak power time period.
The current operating temperature of the refrigeration equipment in this embodiment may also be referred to as the current temperature of the refrigeration house, or may be referred to as the return air temperature of the evaporator in the refrigeration equipment.
In the refrigeration equipment control method of the embodiment, the start and stop of the refrigeration equipment are controlled based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power period and the peak power period, and the phase-change material in the refrigeration equipment is in a solidification state in the valley power period and in a melting state in the peak power period; in the peak power period, the phase-change material is in a melting state and can release cold energy, so that the refrigeration equipment can still enable the temperature of the refrigeration house to be within a preset temperature range when running at a higher temperature, the power consumption of the refrigeration equipment in the peak power period can be reduced, and the economic benefit of the refrigeration equipment can be improved.
Therefore, according to the refrigeration equipment control method, when the refrigeration equipment carries out a defrosting process, the temperature of the refrigeration house can be prevented from rising to the upper limit of the food storage temperature, so that the stability of the temperature of the refrigeration house in the defrosting process can be improved, and the influence on the flavor of food can be avoided. On the other hand, the control method of the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
According to a preferred embodiment, during the valley power period, the conditions for controlling the on-state of the refrigeration equipment are as follows: t > T3－ΔTPreset ofThe conditions for controlling the refrigeration equipment to be closed are as follows: t < T1(ii) a During the peak power period, the conditions for controlling the refrigeration equipment to be started are as follows: t > T2The conditions for controlling the refrigeration equipment to be closed are as follows: t < T3+ΔTPreset(ii) a Wherein, T3Satisfies the following conditions: t is1＜T3＜T2(ii) a T is the current operating temperature of the refrigeration equipment1Is the minimum temperature, T, of food storage2Maximum temperature for food storage, T3Is the temperature at which the phase change material undergoes a phase change, Δ TPreset ofThe temperature difference is preset for the refrigeration house. Preferably,. DELTA.TPreset ofIs 1 to 5 ℃. Specifically, the running temperature range of the refrigeration house is T in the valley electricity time period1～(T3－ΔTPreset of) Peak power time interval, the operating temperature range of the freezer is (T)3+ΔTPreset of)～T2When the time interval is changed from peak power to valley power, the temperature of the refrigeration house is reduced to T3When the phase change material is solidified, the cold energy is stored; when the time interval is changed from the valley power time interval to the peak power time interval, the temperature of the refrigeration house is increased to T3And when the phase-change material is melted, the cold energy is released. According to the refrigeration equipment control method adopting the preferred technical scheme, the refrigeration house is enabled to operate in a lower temperature range in the valley power period, and the refrigeration house is enabled to operate in a higher temperature range in the peak power period, so that the phase-change material can store cold energy in the valley power period and release the cold energy in the peak power period, and the power consumption of the refrigeration equipment in the peak power period can be reduced, and therefore the economic benefit of the refrigeration equipment can be improved.
Fig. 2 is a flowchart illustrating another preferred embodiment of the refrigeration apparatus control method according to the embodiment, and as shown in fig. 2, the refrigeration apparatus control method further includes the following steps: acquiring a pressure signal of a phase-change material, the temperature of an evaporator in refrigeration equipment and the pressure of the evaporator; and controlling the refrigeration equipment to enter a defrosting state based on the pressure signal of the phase-change material, the evaporator temperature and the evaporator pressure in the valley power period and the peak power period, and keeping the temperature of the refrigeration house within a preset temperature range. The control method of the preferred technical scheme of this embodiment increases the pressure signal of the phase-change material as the condition for judging whether entering the defrosting process, thereby not only maintaining the stability of the storage temperature, but also improving the refrigeration performance and economic benefit of the refrigeration equipment.
Preferably, during the valley electricity period, the evaporator temperature and the evaporator pressure when the refrigeration equipment is controlled to enter the defrosting state meet the following conditions:
△T1＞△T2and P is1＞P2；
Wherein, Δ T1And P1Respectively as follows: in the valley electricity period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state; delta T2And P2Respectively as follows: during valley electricity period, when the pressure signal of the phase-change material is a melting pressure signal, the refrigeration equipment entersWhen the defrosting state is entered, the evaporator is in a preset temperature difference and a preset pressure. Delta T1、△T2、P1And P2Depending on the type of evaporator. Specifically, Δ T1And Δ T2Less than the difference between the return air temperature and the supply air temperature, P, set when the evaporator needs defrosting1And P2Less than the low pressure setting for the evaporator when defrosting is required. Specifically, when the pressure signal of the phase-change material is a solidification pressure signal, the evaporator temperature and the evaporator pressure when the refrigeration equipment is controlled to enter a defrosting state meet the following requirements: t is a unit ofReturn air－TAir supply≤△T1And P isLow pressure＜P1(ii) a When the pressure signal of the phase-change material is a melting pressure signal, the evaporator temperature and the evaporator pressure when the refrigeration equipment is controlled to enter a defrosting state meet the following conditions: t is a unit ofReturn air－TAir supply≤△T2And P isLow pressure＜P2(ii) a Wherein, TReturn airIs the return air temperature of the evaporator, TAir supplyIs the supply air temperature of the evaporator, PLow pressureThe low pressure end pressure of the evaporator.
In the control method of the preferred technical scheme of the embodiment, in the valley electricity period, the pressure signal of the phase-change material is the pressure signal during solidification, and the entering interval in the defrosting process is shorter, so that the refrigerating performance of the refrigerating equipment can be improved on the premise of maintaining the stability of the storage temperature, and the refrigerating equipment is prevented from operating in a frosting state for a long time; during the valley electricity period, the pressure signal of the phase-change material is the pressure signal during melting, the entering interval in the defrosting process is longer, and the frequent defrosting of the refrigeration equipment is avoided to cause the fluctuation of the storage temperature, so that the refrigeration equipment can ensure the stability of the storage temperature.
Preferably, in the peak power period, the pressure signal of the phase-change material is a pressure signal during solidification, and the evaporator temperature and the evaporator pressure when the refrigeration equipment is controlled to enter the defrosting state meet the following conditions:
△T3＜△T1and P is3＜P1；
Wherein, delta T1And P1Respectively as follows: during valley electricity period, when the pressure signal of the phase-change material is solidified, the pressure signal is used for refrigeratingWhen the equipment enters a defrosting state, the preset temperature difference and the preset pressure of the evaporator are set; delta T3And P3Respectively as follows: and in the peak power period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state. More preferably,. DELTA.T3Can be associated with Delta T2Same as Δ T2Different, same, P3Can be reacted with P2Same as P2Different. Specifically, in the peak power period, when the phase-change material is in a solidified state, the pressure signal controls the refrigeration equipment to enter a defrosting state in the peak power period under the following conditions: t isReturn air－TAir supply≤△T3And P isLow pressure＜P3(ii) a Wherein, TReturn airIs the return air temperature of the evaporator, TAir supplyIs the supply air temperature of the evaporator, PLow pressureThe low pressure end pressure of the evaporator.
According to the control method of the preferred technical scheme, in the peak power period, the pressure signal of the phase-change material is the pressure signal during solidification, and the time interval for entering the defrosting process is a longer time interval, so that the power consumption of the refrigeration equipment in the peak power period can be saved on the premise of ensuring the stability of the storage temperature and the refrigeration performance of the refrigeration equipment, and the economic benefit of the refrigeration equipment can be improved.
Preferably, in the peak power period, the pressure signal of the phase-change material is a melting pressure signal, and the refrigeration equipment is controlled to operate in a non-defrosting mode. In the control method of the preferred technical scheme of the embodiment, in the peak power period, the pressure signal of the phase-change material is the pressure signal during melting, and as the phase-change material cannot provide cold energy for counteracting the heat lost to the refrigerator during defrosting, the refrigeration equipment operates in a non-defrosting mode, so that the stability of the refrigerator temperature can be ensured.
Example 2
The present embodiment will explain the refrigeration apparatus control device of the present invention in detail.
The refrigeration equipment control device of the embodiment includes an obtaining module 11, a comparing module 12 and a control module 13, as shown in fig. 3. Preferably, the obtaining module 11 is configured to obtain a current operating temperature and a preset operating temperature of the refrigeration equipment; the comparison module 12 is used for comparing the current operating temperature of the refrigeration equipment with a preset operating temperature; the control module 13 is used for controlling the start and stop of the refrigeration equipment based on the comparison result of the current operation temperature of the refrigeration equipment and the preset operation temperature in the valley power period and the peak power period, and enables the phase-change material in the refrigeration equipment to be in a solidification state in the valley power period and to be in a melting state in the peak power period. More preferably, the method for controlling the start and stop of the refrigeration equipment by the control module 13 can refer to the method in embodiment 1, and is not described herein again.
The refrigeration equipment control device of this embodiment, including obtaining module 11, comparison module 12 and control module 13, when refrigeration equipment changes the frost process, through obtaining module 11, comparison module 12 and control module 13's effect, can avoid the freezer temperature to rise to the upper limit of food storage temperature, thereby can improve the stability of freezer storehouse temperature when changing the frost process, avoid food flavor to receive the influence, the refrigeration equipment control device of this embodiment promptly, when refrigeration equipment has solved among the prior art changes the frost, lead to the undulant technical problem of freezer storehouse temperature. On the other hand, the refrigeration plant controlling means of this embodiment still can reduce the power consumption of refrigeration plant in the peak electricity period, improves refrigeration plant's economic benefits.
Example 3
This embodiment explains the refrigeration apparatus of the present invention in detail.
The refrigeration apparatus of the present embodiment includes a refrigeration unit 21, a phase change material assembly 22, and a controller 23, as shown in fig. 4. Preferably, the refrigeration unit 21 forms a refrigerant loop, the phase change material assembly 22 is disposed in the refrigerator, the controller 23 is connected to the refrigeration unit 21, and the controller 23 is configured to execute an executable program to implement the steps of the method according to any one of the embodiments 1.
Preferably, the refrigeration unit 21 is used for refrigerating and providing refrigeration for a refrigeration house, and specifically, the refrigeration unit 21 includes an evaporator 211, a four-way reversing valve 212, a condenser 213, a gas-liquid separator 214 and a compressor 215, as shown in fig. 5. The connection manner and function of the evaporator 211, the four-way reversing valve 212, the condenser 213, the gas-liquid separator 214 and the compressor 215 may be the same as those of the prior art, and will not be described herein.
Preferably, the phase change material assembly 22 is disposed on the freezer storage shelf 31, more particularly around the stored items 32, such that the stored items are always within their storage temperature range, as shown in fig. 5. More preferably, the phase change material assembly 22 includes a housing and a phase change material disposed within the housing. The phase change material can be a product in the prior art, for example, the phase change material is a phase change cold storage material JH-Y-B21.
Preferably, the controller 23 may include a storage device and a processing device, the storage device stores an executable program, and the processing device is configured to execute the executable program in the storage device, so as to implement the steps of the method according to any one of the embodiments 1.
The refrigeration equipment of the embodiment comprises a refrigeration unit, a phase-change material assembly and a controller, wherein the controller is connected with the refrigeration unit and is used for executing an executable program to realize the steps of the method of any technical scheme in the embodiment. On the other hand, the refrigeration equipment can also reduce the power consumption of the refrigeration equipment in the peak power period and improve the economic benefit of the refrigeration equipment.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, the meaning of "plurality" or "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A refrigeration apparatus control method characterized by comprising the steps of:
acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment;
comparing the current operating temperature of the refrigeration equipment with the preset operating temperature;
and controlling the starting and stopping of the refrigeration equipment based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power time period and the peak power time period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power time period and to be in a melting state in the peak power time period.
2. A method as claimed in claim 1, wherein during a valley period, the conditions for controlling the refrigeration appliance to be turned on are: t > T3－ΔTPreset ofAnd the condition for controlling the refrigeration equipment to be closed is as follows: t < T1；
In the peak power period, the conditions for controlling the refrigeration equipment to be started are as follows: t > T2And the conditions for controlling the refrigeration equipment to be closed are as follows: t < T3+ΔTPreset；
Wherein, T3Satisfies the following conditions: t is1＜T3＜T2；
T is the current operating temperature of the refrigeration equipment1Is the minimum temperature, T, of food storage2Maximum temperature for food storage, T3Is the temperature at which the phase change material undergoes a phase change, Δ TPreset ofThe temperature difference is preset for the refrigeration house.
3. The refrigeration appliance control method as claimed in claim 1, further comprising the steps of:
acquiring a pressure signal of a phase-change material, the temperature of an evaporator in refrigeration equipment and the pressure of the evaporator;
and controlling the refrigeration equipment to enter a defrosting state based on the pressure signal of the phase-change material, the temperature of the evaporator and the pressure of the evaporator in a valley power period and a peak power period, and keeping the temperature of the refrigerator within a preset temperature range.
4. A refrigerating apparatus control method as recited in claim 3 wherein, in a valley power period, the evaporator temperature and the evaporator pressure at which the refrigerating apparatus is controlled to enter a defrosting state are satisfied:
△T1＞△T2and P is1＞P2；
Wherein, delta T1And P1Respectively as follows: during valley electricity period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset temperature difference of the evaporator when the refrigeration equipment enters a defrosting statePressure; delta T2And P2Respectively as follows: and in the valley electricity time period, when the pressure signal of the phase-change material is a melting pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state.
5. The refrigeration equipment control method according to claim 3, wherein in a peak power period, the pressure signal of the phase-change material is a solidification pressure signal, and the evaporator temperature and the evaporator pressure when the refrigeration equipment enters a defrosting state are controlled to meet the following conditions:
△T3＜△T1and P is3＜P1；
Wherein, delta T1And P1Respectively as follows: in the valley electricity time period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state; delta T3And P3Respectively as follows: and in the peak power period, when the pressure signal of the phase-change material is a solidification pressure signal, the preset temperature difference and the preset pressure of the evaporator when the refrigeration equipment enters a defrosting state.
6. The control method of the refrigeration equipment as claimed in claim 5, wherein the pressure signal of the phase-change material is a pressure signal during melting in a peak power period, and the refrigeration equipment is controlled to operate in a non-defrosting mode.
7. A refrigeration appliance control method as claimed in claim 4, characterized in that, during a valley period,
when the pressure signal of the phase-change material is a solidification pressure signal, the evaporator temperature and the evaporator pressure when the refrigeration equipment enters a defrosting state are controlled to meet the following conditions: t is a unit ofReturn air－TAir supply≤△T1And P isLow pressure＜P1；
When the pressure signal of the phase-change material is a melting pressure signal, controlling the evaporator temperature and the evaporator pressure when the refrigeration equipment enters a defrosting state to meet the following requirements: t isReturn air－TAir supply≤△T2And P isLow pressure＜P2；
Wherein, TReturn airIs the return air temperature of the evaporator, TAir supplyIs the supply air temperature of the evaporator, PLow pressureThe low pressure end pressure of the evaporator.
8. A refrigeration appliance controlling method according to claim 5 or 6, wherein, in a peak power period, the pressure signal when the phase change material is in solidification, the condition for controlling the refrigeration appliance to enter the defrosting state in the peak power period is: t isReturn air－TAir supply≤△T3And P isLow pressure＜P3(ii) a Wherein, TReturn airIs the return air temperature, T, of the evaporatorAir supplyIs the supply air temperature of the evaporator, PLow pressureThe low pressure end pressure of the evaporator.
9. The refrigeration equipment control device is characterized by comprising an acquisition module, a comparison module and a control module, wherein,
the acquisition module is used for acquiring the current operating temperature and the preset operating temperature of the refrigeration equipment;
the comparison module is used for comparing the current operating temperature of the refrigeration equipment with the preset operating temperature;
the control module is used for controlling the starting and stopping of the refrigeration equipment based on the comparison result of the current operating temperature of the refrigeration equipment and the preset operating temperature in the valley power period and the peak power period, and enabling the phase-change material in the refrigeration equipment to be in a solidification state in the valley power period and to be in a melting state in the peak power period.
10. Refrigeration equipment, characterized by, including refrigerating unit, phase change material subassembly and controller, wherein, refrigerating unit forms the refrigerant circuit, the phase change material subassembly sets up in the freezer, the controller is connected with refrigerating unit, and the controller is used for carrying out executable program, realizes the step of any one of claim 1 to 8 method.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150045690A (en) * | 2013-10-21 | 2015-04-29 | 이창흠 | Cooling and heating system for refrigeration top car using phase-change material |
| CN109442849A (en) * | 2018-11-01 | 2019-03-08 | 中科美菱低温科技股份有限公司 | A kind of storage box and its control system based on phase-change material |
| CN208779746U (en) * | 2018-07-19 | 2019-04-23 | 广东纽恩泰新能源科技发展有限公司 | A kind of heat pump system controlling defrosting function with pressure |
| CN112393476A (en) * | 2020-11-11 | 2021-02-23 | 珠海格力电器股份有限公司 | Defrosting control method of refrigerating unit and refrigerating unit |
| CN113639508A (en) * | 2021-07-27 | 2021-11-12 | 上海海洋大学 | Small cold storage house adopting cold storage plate |
| CN114018427A (en) * | 2021-11-02 | 2022-02-08 | 合肥华凌股份有限公司 | Temperature detection device, storage equipment, refrigerator and storage chamber temperature control method |
| CN215832545U (en) * | 2021-05-13 | 2022-02-15 | 山东理工大学 | Phase change cold accumulation energy accumulator applicable to refrigeration house |
-
2022
- 2022-07-25 CN CN202210878469.XA patent/CN115265066A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150045690A (en) * | 2013-10-21 | 2015-04-29 | 이창흠 | Cooling and heating system for refrigeration top car using phase-change material |
| CN208779746U (en) * | 2018-07-19 | 2019-04-23 | 广东纽恩泰新能源科技发展有限公司 | A kind of heat pump system controlling defrosting function with pressure |
| CN109442849A (en) * | 2018-11-01 | 2019-03-08 | 中科美菱低温科技股份有限公司 | A kind of storage box and its control system based on phase-change material |
| CN112393476A (en) * | 2020-11-11 | 2021-02-23 | 珠海格力电器股份有限公司 | Defrosting control method of refrigerating unit and refrigerating unit |
| CN215832545U (en) * | 2021-05-13 | 2022-02-15 | 山东理工大学 | Phase change cold accumulation energy accumulator applicable to refrigeration house |
| CN113639508A (en) * | 2021-07-27 | 2021-11-12 | 上海海洋大学 | Small cold storage house adopting cold storage plate |
| CN114018427A (en) * | 2021-11-02 | 2022-02-08 | 合肥华凌股份有限公司 | Temperature detection device, storage equipment, refrigerator and storage chamber temperature control method |
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