CN114061259B - Control method of refrigeration equipment - Google Patents

Control method of refrigeration equipment Download PDF

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Publication number
CN114061259B
CN114061259B CN202111442214.0A CN202111442214A CN114061259B CN 114061259 B CN114061259 B CN 114061259B CN 202111442214 A CN202111442214 A CN 202111442214A CN 114061259 B CN114061259 B CN 114061259B
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China
Prior art keywords
temperature
preset
refrigeration equipment
refrigeration
auxiliary
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CN114061259A (en
Inventor
梁星
李成阳
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202111442214.0A priority Critical patent/CN114061259B/en
Publication of CN114061259A publication Critical patent/CN114061259A/en
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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
    • 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
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention discloses a control method of refrigeration equipment, which comprises the following steps: acquiring a reference temperature detected by a reference temperature sensor in a room between refrigeration equipment; acquiring an auxiliary temperature detected by an auxiliary temperature sensor in a refrigerating equipment room; acquiring a temperature difference value between a reference temperature and an auxiliary temperature; judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value or not; if so, controlling the refrigeration equipment to operate according to the reference temperature; otherwise, controlling the refrigeration equipment to operate according to the auxiliary temperature. When the temperature difference value of the reference temperature and the auxiliary temperature is larger than a preset temperature difference threshold value, the object is indicated to shield the reference temperature sensor, the reference temperature is not matched with the room temperature, and at the moment, the operation of the refrigeration equipment is controlled through the auxiliary temperature. Through setting up reference temperature sensor and auxiliary temperature sensor, can effectively avoid because of reference temperature sensor is sheltered from by article and lead to the refrigeration excessively.

Description

Control method of refrigeration equipment
Technical Field
The invention relates to the field of refrigeration equipment, in particular to a control method of refrigeration equipment.
Background
The inside of refrigeration equipment such as refrigerator, gradevin is provided with the temperature sensor who is used for the temperature of response compartment in general, and the refrigeration equipment is operated through the temperature control refrigeration equipment that temperature sensor detected to guarantee that the inside temperature of compartment is in suitable scope all the time. However, if the user blocks the temperature sensor from the object placed in the compartment or is very close to the temperature sensor, the temperature sensor detects a temperature lower than the actual temperature of the compartment. If the volume of the article is large or the heat quantity in the article is high, the temperature detected by the temperature sensor in a long time is different from the actual temperature of the compartment, and at the moment, if the refrigerating equipment is controlled to operate according to the temperature detected by the temperature sensor, the refrigerating time of the refrigerating equipment is too long, and the refrigerating equipment excessively refrigerates, so that the temperature of the compartment is too low, and food in the compartment is frozen.
Disclosure of Invention
The invention aims to provide a control method of refrigeration equipment for preventing overcooling
In order to achieve one of the above objects, an embodiment of the present invention provides a control method of a refrigeration apparatus, including the steps of:
acquiring a reference temperature detected by a reference temperature sensor in a room between refrigeration equipment;
acquiring an auxiliary temperature detected by an auxiliary temperature sensor in a refrigerating equipment room;
acquiring a temperature difference value between a reference temperature and an auxiliary temperature;
judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value or not;
if so, controlling the refrigeration equipment to operate according to the reference temperature;
otherwise, controlling the refrigeration equipment to operate according to the auxiliary temperature.
As a further improvement of an embodiment of the present invention, before the "determining whether the temperature difference value is equal to or less than a preset temperature difference threshold value", the method further includes:
acquiring a reference temperature rise of the reference temperature in the first time, and acquiring an auxiliary temperature rise of the auxiliary temperature in the first time;
judging whether the reference temperature rise and the auxiliary temperature rise are larger than preset abnormal temperature rise values or not;
if yes, controlling the refrigeration equipment to operate for a preset first refrigeration time, and closing the refrigeration equipment;
otherwise, executing the judgment whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value.
As a further improvement of an embodiment of the present invention, after "controlling the operation of the refrigeration equipment according to the auxiliary temperature", the method further includes:
judging whether the refrigeration equipment door body is opened or not;
otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature;
if yes, acquiring a difference value of the auxiliary temperature before and after the door is opened, and judging whether the difference value is larger than a preset abnormal difference value or not;
if yes, controlling the refrigeration equipment to operate for a preset second refrigeration time, and closing the refrigeration equipment;
otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature.
As a further improvement of an embodiment of the present invention, the "judging whether the door of the refrigeration equipment is opened" specifically includes: and judging whether the door lamp is turned on or not.
As a further improvement of an embodiment of the present invention, after the "controlling the operation of the refrigeration equipment according to the auxiliary temperature" further includes:
judging whether the temperature difference values are smaller than or equal to a preset temperature difference threshold value within preset judging time, if yes, executing the operation of the refrigeration equipment according to the reference temperature, otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature.
As a further improvement of an embodiment of the present invention, after the "controlling the operation of the refrigeration equipment according to the auxiliary temperature" further includes:
judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value in at least two time periods, if yes, executing the operation of the refrigeration equipment according to the reference temperature, otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature;
wherein, the adjacent time periods are separated by a preset interval time.
As a further improvement of an embodiment of the present invention, after the "controlling the operation of the refrigeration equipment according to the reference temperature" and the "controlling the operation of the refrigeration equipment according to the auxiliary temperature", further includes:
judging whether the running time of the refrigeration equipment is longer than a preset third refrigeration time or not;
otherwise, continuing to execute the operation of the refrigeration equipment controlled according to the reference temperature or the operation of the refrigeration equipment controlled according to the auxiliary temperature;
if yes, the refrigeration equipment is turned off.
As a further improvement of an embodiment of the present invention, after maintaining the refrigeration equipment in the closed state for a preset shutdown time, the "determining whether the temperature difference value is less than or equal to a preset temperature difference threshold" is performed; if so, controlling the refrigeration equipment to operate according to the reference temperature; otherwise, controlling the refrigeration equipment to operate according to the auxiliary temperature;
wherein the running time of the refrigeration equipment is t a The shutdown time is k x t a And +m, k and m are preset coefficients, and k is greater than 0.
As a further improvement of an embodiment of the present invention, the "controlling the operation of the refrigeration equipment according to the reference temperature" specifically includes:
judging whether the reference temperature is greater than a preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state;
the operation of the refrigeration equipment is controlled according to the auxiliary temperature specifically comprises the following steps:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the auxiliary temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state.
As a further improvement of an embodiment of the present invention, the "controlling the operation of the refrigeration equipment according to the reference temperature" specifically includes:
judging whether the reference temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the air door, otherwise, maintaining the air door in an opened state;
the operation of the refrigeration equipment is controlled according to the auxiliary temperature specifically comprises the following steps:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the auxiliary temperature is smaller than a preset closing temperature, closing the air door if the auxiliary temperature is smaller than the preset closing temperature, and otherwise, maintaining the air door in an opened state.
Compared with the prior art, the invention has the beneficial effects that: when the temperature difference value of the reference temperature and the auxiliary temperature is smaller than or equal to a preset temperature difference threshold value, the object is indicated to not shade the reference temperature sensor, the reference temperature and the intermediate temperature are close, and at the moment, the operation of the refrigeration equipment is controlled through the reference temperature. When the temperature difference value is larger than a preset temperature difference threshold value, the object is indicated to shield the reference temperature sensor, the reference temperature is not matched with the room temperature, and at the moment, the operation of the refrigeration equipment is controlled through the auxiliary temperature. Therefore, by arranging the reference temperature sensor and the auxiliary temperature sensor, the reference temperature sensor can be effectively prevented from being blocked by articles to cause excessive refrigeration.
Drawings
Fig. 1 is a schematic configuration view of a control method of a refrigeration apparatus of the present invention;
fig. 2 is a schematic structural view of a control method of the refrigeration apparatus after step S6 according to the first embodiment of the present invention;
fig. 3 is a schematic structural view of a control method of a refrigeration appliance according to a second embodiment of the present invention after step S6;
fig. 4 is a schematic structural view of a control method of a refrigeration appliance according to a third embodiment of the present invention after step S6;
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.
In the various illustrations of the invention, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for convenience of illustration, and thus serve only to illustrate the basic structure of the inventive subject matter.
The invention provides a control method of refrigeration equipment. The refrigeration device includes a housing having a compartment, a reference temperature sensor disposed within the compartment, and an auxiliary temperature sensor.
The compartment is used for accommodating articles to be refrigerated, and the reference temperature sensor and the auxiliary temperature sensor are arranged at intervals. Preferably, the reference temperature sensor and the auxiliary temperature sensor are located at two diagonal lines of the compartment to avoid a user to place a large number of articles while shielding the reference temperature sensor and the auxiliary temperature sensor as much as possible.
As shown in fig. 1, the control method includes the steps of:
s1, acquiring a reference temperature detected by a reference temperature sensor in a room between refrigeration equipment.
S2, acquiring the auxiliary temperature detected by the auxiliary temperature sensor in the refrigerating equipment room.
S3, acquiring a temperature difference value between the reference temperature and the auxiliary temperature.
The above-mentioned temperature difference value is specifically the reference temperature minus the auxiliary temperature. The reference temperature is the temperature of the environment where the reference temperature sensor is located and the auxiliary temperature is the temperature of the environment where the auxiliary temperature sensor is located. Generally, in the case where the positions of the reference temperature sensor and the auxiliary temperature sensor are unchanged, the range of the value of the temperature difference is small if no article is put in the compartment.
S4, acquiring the reference temperature rise of the reference temperature in the first time, and acquiring the auxiliary temperature rise of the auxiliary temperature in the first time.
The first time is preset time, the reference temperature rise is the temperature rise value of the reference temperature in the first time, and the auxiliary temperature rise is the temperature rise value of the auxiliary temperature in the first time. When the refrigeration equipment stops refrigeration, the values of the reference temperature rise and the auxiliary temperature rise are usually smaller and stable in fluctuation, and when hotter objects are put in, the values of the reference temperature rise and the auxiliary temperature rise are increased, and the closer the objects are to the reference temperature sensor and the auxiliary temperature sensor, the higher the values of the reference temperature rise and the auxiliary temperature rise are.
S5, judging whether the reference temperature rise and the auxiliary temperature rise are larger than preset abnormal temperature rise values or not.
And S5, if yes, executing: s6, after the refrigerating equipment is controlled to run for a preset first refrigerating time, the refrigerating equipment is turned off.
If the result of S5 is yes, it indicates that there are more articles placed, and both the reference temperature sensor and the auxiliary temperature sensor are blocked, and at this time, if the operation of the refrigeration equipment is controlled according to the reference temperature or the auxiliary temperature detection, the refrigeration equipment will be caused to excessively refrigerate. At the moment, the operation of the refrigeration equipment is controlled according to the preset first refrigeration time, so that the excessive refrigeration of the refrigeration equipment can be avoided as much as possible. However, the temperature of the compartment cannot be precisely controlled by controlling the cooling time of the cooling apparatus, and thus, if either the reference temperature sensor or the auxiliary temperature sensor is not shielded by the article, this operation is not performed. Moreover, since the reference temperature sensor and the auxiliary temperature sensor are far apart, the probability of yes in S5 is small, and the purpose of this step is to prevent the refrigerating apparatus from being excessively refrigerated when an extreme situation occurs in which the reference temperature sensor and the auxiliary temperature sensor are both shielded by a large number of articles.
S5, if the result is that the execution is not performed; and S7, judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value.
And S7, if yes, executing: s8, controlling the operation of the refrigeration equipment according to the reference temperature.
The result of S7 is that otherwise: s9, controlling the operation of the refrigeration equipment according to the auxiliary temperature.
The temperature difference value is smaller than or equal to a preset temperature difference threshold value, the rising amplitude of the reference temperature relative to the auxiliary temperature is smaller, the reference temperature is indicated to be close to the room temperature without shielding the reference temperature sensor, and at the moment, the operation of the refrigeration equipment is controlled through the reference temperature, namely whether the refrigeration equipment refrigerates or not is controlled, and the temperature of the room can be accurately controlled.
The temperature difference value is larger than a preset temperature difference threshold value, and the rising amplitude of the reference temperature relative to the auxiliary temperature is large, so that the object is indicated to shield the reference temperature sensor. At this time, the auxiliary temperature detected by the auxiliary temperature sensor controls the operation of the refrigerating equipment, i.e. whether the refrigerating equipment is refrigerating or not is controlled by the auxiliary temperature, so that the temperature of the compartment can be accurately controlled.
Therefore, whether the operation of the refrigeration equipment is controlled according to the reference temperature or the auxiliary temperature is determined through the temperature difference value of the reference temperature and the auxiliary temperature, and excessive refrigeration caused by shielding of the temperature sensor can be effectively prevented. Meanwhile, the reason that the temperature rising value of the reference temperature within a time range is not adopted to determine whether the reference sensor is shielded or not is that misjudgment can be caused by too long door opening time. If the temperature difference value change condition of the reference temperature and the auxiliary temperature is adopted, even if the door opening time is too long, the temperature difference value change is small due to the changed reference temperature and the changed auxiliary temperature, so that erroneous judgment caused by the too long door opening time is avoided.
The step S3 may be executed after the step S5 is no and before the step S7.
In an embodiment of the present invention, the step S8 specifically includes:
judging whether the reference temperature is greater than a preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state;
the step S9 specifically includes:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the auxiliary temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state.
In an embodiment of the present invention, the step S8 specifically includes:
judging whether the reference temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the air door, otherwise, maintaining the air door in an opened state;
the step S9 specifically includes:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the auxiliary temperature is smaller than a preset closing temperature, closing the air door if the auxiliary temperature is smaller than the preset closing temperature, and otherwise, maintaining the air door in an opened state.
As shown in fig. 2, in the first embodiment, the control method further includes, after S9: and S10, judging whether the temperature difference values are smaller than or equal to a preset temperature difference threshold value within preset judging time, if so, executing the step S8, otherwise, executing the step S9.
When the temperature difference value between the reference temperature and the auxiliary temperature is detected to rise until the temperature difference value exceeds the temperature difference threshold value in the judging time, the fact that the temperature of the article shielding the reference temperature sensor is gradually reduced is indicated, and inaccurate sensing of the reference temperature sensor is not caused. Since the article has been placed under the reference temperature sensor, the user will not block the reference temperature sensor if the article is placed again, but may block the auxiliary temperature sensor. Therefore, when the temperature difference value is smaller than or equal to the preset temperature difference threshold value in the preset judging time, the operation of the auxiliary temperature control refrigeration equipment is switched to the operation of the auxiliary temperature control refrigeration equipment according to the reference temperature, and the condition that the temperature sensor senses inaccuracy is not caused even if the auxiliary temperature sensor is shielded by an article newly put in by a user.
As shown in fig. 3, in the second embodiment, the control method further includes, after S9: s11, judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value in at least two time periods, if yes, executing a step S8, otherwise, executing a step S9; the adjacent time periods are separated by preset interval time, and the duration of any time period is preset judgment time.
The time period starts with step S9. For example, assuming that the interval time is one hour, the duration of the time period is one hour, the number of the time periods is three, and in the first hour, the third hour, and the fifth hour after the start of the step S9, if the temperature difference value is equal to or less than the temperature difference threshold value, it is determined to execute the step S8. When the temperature difference value of the refrigeration equipment in a certain shorter time is larger than the temperature difference threshold value because the position of the article placed in the refrigeration equipment is close to the reference temperature sensor, compared with the embodiment that the temperature difference value in the judgment time is smaller than or equal to the temperature difference threshold value, the embodiment can still realize switching from the step S9 to the step S8, and the accuracy is higher.
As shown in fig. 4, in the third embodiment, after the step S9, the method further includes:
s12, judging whether the refrigeration equipment door body is opened or not.
And if the result of the step S12 is that otherwise, the step S9 is executed.
And S12, if yes, executing: s13, acquiring a difference value of the auxiliary temperature before and after the door is opened; s14, judging whether the difference value is larger than a preset abnormal difference value or not;
and S14, if yes, executing: s15, controlling the refrigeration equipment to operate for a preset second refrigeration time; s16, closing the refrigeration equipment;
and if the result of the step S14 is that otherwise, the step S9 is executed.
In this embodiment, if the door of the refrigeration apparatus is opened, the user may take and put the article. By detecting the difference value of the auxiliary temperature before and after the door is opened, namely judging whether the difference value is larger than a preset abnormal difference value, whether the auxiliary temperature sensor is shielded or not can be determined. If not, continuing to control the operation of the refrigeration equipment according to the auxiliary temperature. If the auxiliary temperature sensor is shielded, since the reference temperature sensor is also shielded, neither the reference temperature sensor nor the auxiliary temperature sensor can accurately reflect the temperature condition of the compartment, and at this time, the excessive cooling of the refrigeration equipment is prevented by controlling the operation time of the refrigeration equipment.
Specifically, the "judging whether the door body of the refrigeration equipment is opened" specifically includes: and judging whether the door lamp is turned on or not. Whether the door light is turned on may be determined by whether a light sensor or a circuit of the door light is completed.
In the above three embodiments, the control method further includes, at step S8: s17, judging whether the running time of the refrigeration equipment is longer than a preset third refrigeration time;
if the result of the S17 is that the step is not finished, continuing to execute the step S8; and S18, if yes, executing the step S17, and closing the refrigeration equipment.
The control method further includes, at step S9: s19, judging whether the running time of the refrigeration equipment is longer than a preset third refrigeration time;
if the result of the S19 is that the step is not finished, continuing to execute the step S9; and S20, if yes, executing the step S19, and closing the refrigeration equipment.
The total operation time of the refrigeration equipment is detected, so that the refrigeration equipment is further prevented from being excessively cooled due to excessively long operation time of the refrigeration equipment. In actual use, the time of the third cooling time can be set longer, and the purpose of setting S17 and S18, S19 and S20 is to prevent the cooling device from being excessively cooled due to the constant operation of the cooling device when the reference temperature sensor or the auxiliary temperature sensor fails.
Step S10 in the first embodiment, step S11 in the second embodiment, and step S12 in the third embodiment are all performed during the third cooling time. S10, S11, S12 are all performed in synchronization with S19. In the third embodiment, if the result of S12 is yes, S19 is stopped first, that is, the determination of stopping the cooling time of the refrigeration apparatus first is performed first, S13 and S14 are performed first, if the result of S14 is no, then S9 is returned, at this time, the determination steps S12 and S19 may be performed, and if the result of S14 is yes, the refrigeration apparatus is stopped, and S19 is not required to be performed.
Further, after steps S6, S16, S18, and S20, that is, after the refrigeration equipment is maintained in the closed state for a preset shutdown time, steps S7, S8, and S9 are executed.
Wherein the running time of the refrigeration equipment is t a The shutdown time is k x t a And +m, k and m are preset coefficients, and k is greater than 0. Therefore, the shutdown time of the refrigeration equipment is in direct proportion to the operation time of the refrigeration equipment, so that the room temperature of the refrigeration equipment can be higherAnd executing the detection step S7 again to prevent the refrigerating equipment from running when the temperature of the compartment is low.
The above-mentioned closing of the refrigeration equipment means stopping the refrigeration of the refrigeration equipment, and maintaining the refrigeration equipment in the closed state for a preset shutdown time means that the refrigeration equipment does not refrigerate in the shutdown time.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims (9)

1. A control method of a refrigeration apparatus, comprising the steps of:
acquiring a reference temperature detected by a reference temperature sensor in a room between refrigeration equipment;
acquiring an auxiliary temperature detected by an auxiliary temperature sensor in a refrigerating equipment room;
acquiring a temperature difference value between a reference temperature and an auxiliary temperature;
judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value or not;
if so, controlling the refrigeration equipment to operate according to the reference temperature;
otherwise, controlling the refrigeration equipment to operate according to the auxiliary temperature;
the method further comprises the following steps of:
judging whether the refrigeration equipment door body is opened or not;
otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature;
if yes, acquiring a difference value of the auxiliary temperature before and after the door is opened, and judging whether the difference value is larger than a preset abnormal difference value or not;
if yes, controlling the refrigeration equipment to operate for a preset second refrigeration time, and closing the refrigeration equipment;
otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature.
2. The control method of a refrigeration unit as recited in claim 1, further comprising, before said determining whether said temperature difference value is equal to or less than a preset temperature difference threshold value:
acquiring a reference temperature rise of the reference temperature in the first time, and acquiring an auxiliary temperature rise of the auxiliary temperature in the first time;
judging whether the reference temperature rise and the auxiliary temperature rise are larger than preset abnormal temperature rise values or not;
if yes, controlling the refrigeration equipment to operate for a preset first refrigeration time, and closing the refrigeration equipment;
otherwise, executing the judgment whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value.
3. The method for controlling a refrigeration unit according to claim 1, wherein the "determining whether the door of the refrigeration unit is open" is specifically: and judging whether the door lamp is turned on or not.
4. The control method of a refrigeration unit according to claim 1, further comprising, after said controlling operation of the refrigeration unit according to said auxiliary temperature:
judging whether the temperature difference values are smaller than or equal to a preset temperature difference threshold value within preset judging time, if yes, executing the operation of the refrigeration equipment according to the reference temperature, otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature.
5. The control method of a refrigeration unit according to claim 1, further comprising, after said controlling operation of the refrigeration unit according to said auxiliary temperature:
judging whether the temperature difference value is smaller than or equal to a preset temperature difference threshold value in at least two time periods, if yes, executing the operation of the refrigeration equipment according to the reference temperature, otherwise, executing the operation of the refrigeration equipment according to the auxiliary temperature;
wherein, the adjacent time periods are separated by a preset interval time.
6. The control method of a refrigeration unit according to claim 1, further comprising, after said "controlling operation of the refrigeration unit according to said reference temperature" and "controlling operation of the refrigeration unit according to said auxiliary temperature:
judging whether the running time of the refrigeration equipment is longer than a preset third refrigeration time or not;
otherwise, continuing to execute the operation of the refrigeration equipment controlled according to the reference temperature or the operation of the refrigeration equipment controlled according to the auxiliary temperature;
if yes, the refrigeration equipment is turned off.
7. The control method of a refrigeration appliance according to any one of claims 1, 2, and 6, wherein said "determining whether said temperature difference value is equal to or less than a preset temperature difference threshold" is performed after a preset shutdown time for maintaining the refrigeration appliance in a closed state; if so, controlling the refrigeration equipment to operate according to the reference temperature; otherwise, controlling the refrigeration equipment to operate according to the auxiliary temperature;
wherein the running time of the refrigeration equipment is t a The shutdown time is k x t a And +m, k and m are preset coefficients, and k is greater than 0.
8. The control method of a refrigeration unit according to claim 1, wherein said controlling operation of the refrigeration unit according to said reference temperature is specifically:
judging whether the reference temperature is greater than a preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state;
the operation of the refrigeration equipment is controlled according to the auxiliary temperature specifically comprises the following steps:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, starting the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in a closed state;
after the compressor and the evaporator fan are started, judging whether the auxiliary temperature is smaller than a preset closing temperature, if so, closing the compressor and the evaporator fan, otherwise, maintaining the compressor and the evaporator fan in an opening state.
9. The control method of a refrigeration unit according to claim 1, wherein said controlling operation of the refrigeration unit according to said reference temperature is specifically:
judging whether the reference temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the reference temperature is smaller than a preset closing temperature, if so, closing the air door, otherwise, maintaining the air door in an opened state;
the operation of the refrigeration equipment is controlled according to the auxiliary temperature specifically comprises the following steps:
judging whether the auxiliary temperature is greater than the preset starting temperature, if so, opening an air door on the air duct, otherwise, maintaining the air door in a closed state;
after the air door is opened, judging whether the auxiliary temperature is smaller than a preset closing temperature, closing the air door if the auxiliary temperature is smaller than the preset closing temperature, and otherwise, maintaining the air door in an opened state.
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