CN111238139B - Control method of refrigerating device - Google Patents

Control method of refrigerating device Download PDF

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Publication number
CN111238139B
CN111238139B CN201811435263.XA CN201811435263A CN111238139B CN 111238139 B CN111238139 B CN 111238139B CN 201811435263 A CN201811435263 A CN 201811435263A CN 111238139 B CN111238139 B CN 111238139B
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China
Prior art keywords
temperature
controlling
refrigerating
refrigeration
control method
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Active
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CN201811435263.XA
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Chinese (zh)
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CN111238139A (en
Inventor
范志军
任开龙
蒋彬
宫春晖
李彦玫
张文
耿世德
芦树龙
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Qingdao Haier Special Refrigerator Co Ltd
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Qingdao Haier Special Refrigerator Co Ltd
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Priority to CN201811435263.XA priority Critical patent/CN111238139B/en
Publication of CN111238139A publication Critical patent/CN111238139A/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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D29/003—Arrangement or mounting of control or safety devices for movable 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1412—Removal by evaporation using condenser heat or heat of desuperheaters
    • 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
    • F25D2700/12—Sensors measuring the inside temperature
    • 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)
  • Defrosting Systems (AREA)

Abstract

The invention provides a control method of a refrigerating device, wherein the refrigerating device internally comprises a refrigerating system, the refrigerating system comprises a compressor, a condenser, a throttle valve and an evaporator which are sequentially connected to form a circulation loop, and a refrigerant flows through the refrigerating system; the refrigeration device is characterized by further comprising a refrigeration chamber and a water receiving disc arranged below the evaporator and used for receiving defrosting water, the condenser is arranged close to the water receiving disc, the refrigeration device further comprises a fan used for blowing the cooling capacity of the evaporator to the refrigeration chamber, and the control method comprises the following steps: presetting the starting temperature and the shutdown temperature of the refrigerating chamber; entering a defrosting water evaporation mode; controlling the compressor to start and operate; controlling the fan to stop and lasting for T1 time; detecting the temperature of the refrigerating compartment; and if the temperature of the refrigerating chamber is greater than or equal to the starting temperature, controlling the compressor and the fan to be started.

Description

Control method of refrigerating device
The invention relates to the field of refrigerating devices, in particular to a control method of a refrigerating device.
Background
For the existing common refrigerator, under the condition that the ambient temperature or the temperature of a refrigerating room is relatively low, the evaporation amount of the defrosting water is possibly insufficient, so that the problem of overflowing of the defrosting water is caused. Particularly, with the rise of the air-cooled refrigeration conversion cabinet in the existing refrigeration device, the problem that defrosting water in the refrigeration device cannot be evaporated in time and overflows also occurs.
For the single-system single-box horizontal air-cooling refrigeration and freezing conversion refrigerator, the evaporator is designed according to the freezing requirement. In the case of low ambient temperatures, the compressor in the freezer may not be activated for a long time. Therefore, the condenser is in a normal temperature state, and cannot evaporate defrosting water in time, so that the floor of a user is damaged.
Therefore, a control method of the refrigeration device must be designed to raise the temperature of the condenser, but the temperature of the evaporator cannot be introduced into the interior of the refrigerator, so as to achieve the purpose of evaporating the defrosting water.
Disclosure of Invention
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a control method of a refrigerating device comprises a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser, a throttle valve and an evaporator which are sequentially connected to form a circulation loop, and a refrigerant flows through the refrigerating system; the refrigeration device is characterized by further comprising a refrigeration chamber and a water receiving disc arranged below the evaporator and used for receiving defrosting water, the condenser is arranged close to the water receiving disc, the refrigeration device further comprises a fan used for blowing the cooling capacity of the evaporator to the refrigeration chamber, and the control method comprises the following steps:
presetting the starting temperature and the shutdown temperature of the refrigerating chamber;
entering a defrosting water evaporation mode;
controlling the compressor to start and operate;
controlling the fan to stop and lasting for T1 time;
detecting the temperature of the refrigeration compartment;
and if the temperature of the refrigerating chamber is greater than or equal to the starting temperature, controlling both the compressor and the fan to be started.
As a further improvement of the invention, the step of entering the defrosting water evaporation mode comprises the following steps:
presetting a target refrigerating temperature of the refrigerating chamber, wherein the target refrigerating temperature is greater than a shutdown temperature and less than a startup temperature;
detecting the temperature of the refrigeration compartment;
confirming that the temperature of the refrigeration compartment is between the target refrigeration temperature and the starting temperature.
As a further improvement of the invention, before the step of entering the defrosting water evaporation mode, the method further comprises the following steps:
presetting a target environment temperature interval between C1 and C2;
detecting the ambient temperature;
confirming that the ambient temperature is within the target ambient temperature interval.
As a further improvement of the invention, T1 is more than or equal to 1min and less than or equal to 3min.
As a further improvement of the present invention, the refrigeration system further includes a heating wire disposed near the evaporator, and the reference temperature of the refrigeration compartment is preset in a case where the ambient temperature is extremely low, and the control method further includes:
detecting the ambient temperature;
confirming that the ambient temperature is less than the target ambient temperature interval;
controlling the heating wire to be opened and operated;
detecting the temperature of the refrigeration compartment;
confirming that the temperature of the refrigeration compartment is greater than or equal to a reference temperature;
and controlling the heating wire to be powered off.
As a further improvement of the invention, the reference temperature of the refrigeration compartment has a value of the shutdown temperature plus 0.2 ℃.
As a further improvement of the present invention, the "controlling the heating wire to be opened and operated" further includes:
controlling the heating wire to be opened and operated for T3 time;
and controlling the fan to start.
As a further improvement of the present invention, said "controlling the power off of the heating wire" includes:
controlling the heating wire to be powered off and lasting for T4 time;
and controlling the fan to stop.
As a further improvement of the present invention, the refrigeration apparatus further includes a timer for detecting a shutdown time of the compressor, and in a case where a sudden increase in the temperature of the refrigeration compartment is detected, the control method further includes:
detecting the temperature of the refrigeration compartment;
confirming that the temperature of the refrigerating chamber is higher than the starting temperature;
controlling the compressor to shut down;
the timer counts T5 minutes;
and controlling the starting and the operation of the compressor.
As a further improvement of the present invention, said T5 is 5 minutes.
Compared with the prior art, the invention has the beneficial effects that: the refrigeration system utilizes the startup of the compressor for a short time and is matched with the shutdown of the fan, so that the temperature of the condenser is raised, the cold energy generated by the evaporator cannot be led into the refrigeration system, the aim of automatic evaporation of the defrosting water is fulfilled, and the problem of overflow of the defrosting water is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method of controlling a refrigeration unit in accordance with the present invention;
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Moreover, repeated reference numerals or designations may be used in various embodiments. These iterations are merely for simplicity and clarity of describing the present invention, and are not intended to represent any correlation between the different embodiments or configurations discussed.
As shown in fig. 1, the present invention provides a control method of a refrigeration device, the refrigeration device includes a refrigeration system therein, and the refrigeration device can be divided into a direct-cooling refrigerator, an air-cooling refrigerator and a horizontal air-cooling refrigeration and freezing conversion refrigerator. The refrigeration system comprises a compressor, a condenser, a throttle valve and an evaporator which are sequentially connected to form a circulation loop, and a refrigerant flows through the refrigeration system; the refrigerating device also comprises a refrigerating chamber and a water receiving disc which is arranged below the evaporator and used for receiving defrosting water, the condenser is arranged close to the water receiving disc, the refrigerating device also comprises a fan which is used for blowing the cold energy of the evaporator to the refrigerating chamber, and the control method comprises the following steps:
s1: presetting the starting temperature and the shutdown temperature of the refrigerating chamber;
s2: entering a defrosting water evaporation mode;
s3: controlling the compressor to start and operate;
s4: controlling the fan to stop and lasting for T1 time;
s5: detecting the temperature of the refrigeration compartment;
s6: and if the temperature of the refrigerating chamber is greater than or equal to the starting temperature, controlling both the compressor and the fan to be started.
The refrigerating device also comprises a normal refrigerating mode, namely, the compressor and the fan are controlled to be started and operated. And when the temperature of the refrigerating chamber is less than or equal to the target refrigerating temperature of the refrigerating chamber, controlling both the compressor and the fan to stop.
And the compressor is stopped for at least 5 minutes to balance the refrigerant in the refrigeration system and ensure the normal starting of the compressor at the next time.
And in the step S4, T1 is more than or equal to 1min and less than or equal to 3min in the step of controlling the fan to stop and last for T1 time. Namely, the starting time of the compressor is controlled to reach the required starting rate, the starting time is not required to be too long, the temperature of the condenser is increased through the short-time starting of the compressor, and the temperature of the refrigerating chamber is not reduced.
In the working process of the refrigerator, defrosting water is received in the water receiving disc, when a compressor in the refrigerating system is started, the temperature of the condenser can rise, the fan is closed at the moment, the cold energy generated by the evaporator cannot be guided into the refrigerating system, however, the condenser in a high-temperature state can accelerate the evaporation of the defrosting water in the water receiving disc, and in the embodiment, the condenser is close to the water receiving disc, so that the evaporation efficiency is further improved, and the phenomenon that the defrosting water overflows to cause the floor of a user to be damaged is avoided.
And S2: the step of entering the defrosting water evaporation mode comprises the following steps:
s21: in a preferred embodiment of the present invention, the start-up temperature is 3 ℃ above the target refrigeration temperature, and the shutdown temperature is 3 ℃ below the target refrigeration temperature.
S22: detecting the temperature of the refrigeration compartment;
s23: and confirming that the temperature of the refrigerating compartment is between the target refrigerating temperature and the starting temperature.
The refrigerator is started when the refrigerating chamber is at the starting temperature and is shut down when the refrigerating chamber is at the shutdown temperature, so that the temperature of the refrigerating chamber can be kept between the starting temperature and the shutdown temperature. And the target refrigeration temperature is set, and the refrigeration chamber enters the defrosting water evaporation mode when the refrigeration chamber is between the target refrigeration temperature and the starting temperature, so that the temperature change in the refrigeration chamber cannot be influenced. And the defrosting water evaporation mode is entered in the process that the temperature of the refrigerating chamber is gradually increased to the starting temperature, and the fan can be directly turned on to refrigerate the refrigerating chamber after the temperature of the refrigerating chamber reaches the starting temperature.
And S2: before the step of entering the defrosting water evaporation mode, the method also comprises the following steps:
s221: the preset target environment temperature interval is between C1 and C2, specifically, in a preferred embodiment of the present invention, C1 is-5 ℃, C2 is 20 ℃, and C1 to C2 are normal temperature conditions determined according to local temperature conditions;
s222: detecting the ambient temperature;
s223: confirming that the ambient temperature is within the target ambient temperature interval.
Therefore, the defrosting water evaporation mode is turned on only when the ambient temperature is a normal temperature condition. When the ambient temperature is too hot or too cold, the start and stop of the refrigeration system can be affected. If the ambient temperature is overheated, the compressor and the fan must be started for a long time, the temperature in the refrigerating room is increased rapidly, the evaporation of the defrosting water is rapid, and the defrosting water evaporation mode is not required to be started; if the ambient temperature is too cold, the starting frequency of the compressor and the fan is reduced, the amount of defrosting water is correspondingly reduced, and the defrosting water evaporation mode is not required to be entered. Therefore, in order to reduce unnecessary loss of electric power, the defrosting water evaporation mode must be in a normal temperature condition.
In a preferred embodiment of the present invention, the refrigeration system further includes a heating wire disposed near the evaporator, and the reference temperature of the refrigeration compartment is preset in a case where the ambient temperature is extremely low, and the control method further includes:
s01: detecting the ambient temperature;
s02: confirming that the environmental temperature is smaller than the target environmental temperature interval;
s03: controlling the heating wire to be opened and operated;
s04: detecting the temperature of the refrigerating compartment;
s05: confirming that the temperature of the refrigerating compartment is greater than or equal to a reference temperature;
s06: and controlling the power-off of the heating wire.
Specifically, the reference temperature value of the refrigeration compartment is the value of the shutdown temperature plus 0.2 ℃. The compressor relies on after shutting down the fan continues to blow the heat to the refrigeration room indoor, has both reached the effect that improves the indoor temperature of refrigeration room, and the opening time of reducible heater strip has again reduced the unnecessary loss of electric quantity.
And S03: the step of controlling the heating wire to be opened and operated further comprises the following steps:
s031: controlling the heating wire to be started and operated for T3 time, wherein T3 is 3 minutes;
s032: and controlling the fan to start.
It should be noted that the reason why the fan is controlled to be turned on after being delayed is that the compressor is just stopped, and the evaporator is at a lower temperature at the time, so that the cold quantity can be prevented from being continuously blown into the refrigerating compartment.
The S06: the step of controlling the power failure of the heating wire comprises the following steps:
s061: controlling the heating wire to be powered off and lasting for T4 time, wherein T4 is 3 minutes;
s062: and controlling the fan to stop.
Further, the refrigeration apparatus further includes a timer for detecting a shutdown time of the compressor, and in a case where a sudden temperature increase of the refrigeration compartment is detected, a large amount of high-temperature objects are generally placed in the refrigeration compartment, and the control method further includes:
s001: detecting the temperature of the refrigeration compartment;
s002: confirming that the temperature of the refrigerating chamber is higher than the starting temperature;
s003: controlling the compressor to shut down;
s004: the timer counts T5 minutes, in the present embodiment, T5 is 5 minutes;
s005: and controlling the starting and the operation of the compressor.
The effect of the compressor shutdown for at least 5 minutes is to equalize the refrigerant in the refrigeration system. Further, in the case where the compressor and the fan are simultaneously operated, the refrigerating apparatus may be in the defrosting water evaporation mode in performing the present invention, or may be in the normal refrigerating mode in performing the present invention. In addition, in a preferred embodiment of the present invention, the defrosting water evaporation mode is started every 1 hour.
Therefore, in an embodiment of the present invention, the method for controlling a refrigeration apparatus specifically includes:
the preset target environment temperature range is between C1 and C2;
presetting the starting temperature and the shutdown temperature of the refrigerating chamber;
entering a defrosting water evaporation mode;
controlling the compressor to start and operate;
controlling the fan to stop and lasting for T1 time;
detecting the temperature of the refrigeration compartment;
and if the temperature of the refrigerating chamber is greater than or equal to the starting temperature, controlling the compressor and the fan to be started.
The refrigeration system utilizes the startup of the compressor in a short time and is matched with the closing of the evaporation fan, so that the temperature of the condenser is increased, and the temperature of the evaporator can not be led into the refrigeration system, thereby achieving the purpose of automatic evaporation of defrosting water. In conclusion, the invention has simple hardware design, and only through the design of software logic control, the temperature of the refrigeration chamber, the temperature of the condenser, the target set temperature and the like are controlled in many ways, so that the problem of the overflow of defrosting water in the refrigeration device is solved.
It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The above detailed description is merely illustrative of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications within the scope of the present invention without departing from the technical spirit of the present invention.

Claims (9)

1. A control method of a refrigerating device comprises a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser, a throttle valve and an evaporator which are sequentially connected to form a circulation loop, and a refrigerant flows through the refrigerating system; the refrigeration device is characterized by further comprising a refrigeration chamber and a water receiving disc arranged below the evaporator and used for receiving defrosting water, the condenser is arranged close to the water receiving disc, the refrigeration device further comprises a fan used for blowing the cooling capacity of the evaporator to the refrigeration chamber, and the control method comprises the following steps:
presetting a starting temperature, a shutdown temperature and a target refrigerating temperature of the refrigerating chamber, wherein the target refrigerating temperature is greater than the shutdown temperature and less than the starting temperature;
detecting the temperature of the refrigeration compartment;
when the temperature of the refrigerating chamber is between the target refrigerating temperature and the starting temperature, entering a defrosting water evaporation mode to accelerate the evaporation of defrosting water in the water pan, wherein the defrosting water evaporation mode is as follows: controlling the compressor to start and operate, and controlling the fan to stop and last for T1 time;
detecting the temperature of the refrigeration compartment;
and if the temperature of the refrigerating chamber is greater than or equal to the starting temperature, controlling both the compressor and the fan to be started.
2. The control method according to claim 1, wherein the step of entering the defrosting water evaporation mode further comprises, before the step of:
the preset target environment temperature range is between C1 and C2;
detecting the ambient temperature;
confirming that the ambient temperature is within the target ambient temperature interval.
3. The control method according to claim 1, characterized in that T1 is 1min ≦ T1 ≦ 3min.
4. The control method according to claim 1, wherein the refrigeration system further comprises a heater wire disposed near the evaporator, and a reference temperature of the refrigeration compartment is preset in a case where an ambient temperature is extremely low, and the control method further comprises:
detecting the ambient temperature;
confirming that the ambient temperature is less than the target ambient temperature interval;
controlling the heating wire to be opened and operated;
detecting the temperature of the refrigeration compartment;
confirming that the temperature of the refrigeration compartment is greater than or equal to a reference temperature;
and controlling the heating wire to be powered off.
5. Control method according to claim 4, characterized in that the value of the reference temperature of the refrigerating compartment is the value of the shutdown temperature plus 0.2 ℃.
6. The control method according to claim 4, wherein the controlling the heating wire to be opened and operated further comprises:
controlling the heating wire to be opened and operated for T3 time;
and controlling the fan to start.
7. The control method according to claim 4, wherein the "controlling the power off of the heating wire" includes:
controlling the heating wire to be powered off and lasting for T4 time;
and controlling the fan to stop.
8. The control method according to claim 1, wherein said refrigeration apparatus further comprises a timer for detecting a time of shutdown of said compressor, and in case of detecting a sudden temperature increase of said refrigeration compartment, said control method further comprises:
detecting the temperature of the refrigeration compartment;
confirming that the temperature of the refrigerating compartment is greater than the starting temperature;
controlling the compressor to shut down;
the timer counts T5 minutes;
and controlling the starting and the operation of the compressor.
9. The control method according to claim 8, wherein T5 is 5 minutes.
CN201811435263.XA 2018-11-28 2018-11-28 Control method of refrigerating device Active CN111238139B (en)

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CN114294903A (en) * 2021-12-31 2022-04-08 海信（山东）冰箱有限公司 Constant temperature and humidity device
CN115355657A (en) * 2022-07-22 2022-11-18 青岛海尔特种电冰柜有限公司 Humidity control method of refrigeration equipment

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JP2012178100A (en) * 2011-02-28 2012-09-13 Panasonic Corp Cooling and heating device of automatic vending machine
CN102331136A (en) * 2011-10-13 2012-01-25 海尔集团公司 Direct cooling refrigerator
CN105466117B (en) * 2015-11-19 2018-02-02 青岛海尔股份有限公司 A kind of fridge-freezer
CN106247753B (en) * 2016-09-30 2019-05-03 青岛海尔股份有限公司 A kind of control method of refrigerator and the refrigerator
CN107289712A (en) * 2017-07-25 2017-10-24 南京创维家用电器有限公司 A kind of wind cooling refrigerator and its refrigeration system, refrigeration control method

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