KR20170053081A - Defrosting control apparatus and defrosting methods for indirectness cooling system - Google Patents

Defrosting control apparatus and defrosting methods for indirectness cooling system Download PDF

Info

Publication number
KR20170053081A
KR20170053081A KR1020150155399A KR20150155399A KR20170053081A KR 20170053081 A KR20170053081 A KR 20170053081A KR 1020150155399 A KR1020150155399 A KR 1020150155399A KR 20150155399 A KR20150155399 A KR 20150155399A KR 20170053081 A KR20170053081 A KR 20170053081A
Authority
KR
South Korea
Prior art keywords
defrosting
sensor
moisture sensor
moisture
defrost
Prior art date
Application number
KR1020150155399A
Other languages
Korean (ko)
Other versions
KR101753755B1 (en
Inventor
나경두
장한성
Original Assignee
한국알프스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국알프스 주식회사 filed Critical 한국알프스 주식회사
Priority to KR1020150155399A priority Critical patent/KR101753755B1/en
Publication of KR20170053081A publication Critical patent/KR20170053081A/en
Application granted granted Critical
Publication of KR101753755B1 publication Critical patent/KR101753755B1/en

Links

Images

Classifications

    • 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
    • F25D21/002—Defroster control
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25D21/002—Defroster control
    • F25D21/004—Control mechanisms
    • 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
    • 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
    • F25D21/08—Removing frost by electric heating
    • 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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/11—Sensor to detect if defrost is necessary
    • Y02B40/30—

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Defrosting Systems (AREA)

Abstract

Disclosed are a defrost control device and a defrost control method of an indirect cooling system. According to one aspect of the present invention, the defrost control device comprises: a moisture sensor module disposed at an arbitrary position in a cold air generating room where an evaporator is mounted to sense moisture; and a controller for controlling an operation of a refrigerator defrost heater by determining a defrosting time from information obtained from the moisture sensor module. In addition, a first and a second moisture sensor modules may include a humidity sensor attached to a front surface of a substrate, and a sensor defrost drier attached to a rear surface of the substrate and operated on/off according to a change in an output value of a humidity sensor to remove dew formed on the surface of the moisture sensor, wherein the control unit controls the operation of the refrigerator defrost heater by determining the defrosting time based on an accumulated number of times of on/off of the dryer for the sensor defrost drier.

Description

[0001] DEFROSTING CONTROL APPARATUS AND DEFROSTING METHODS FOR INDIRECTNESS COOLING SYSTEM [0002]

The present invention relates to a defrost control apparatus and method for an indirect cooling system, and more particularly, to a defrost control apparatus and method for an indirect cooling system in which a cool air generating chamber is separately formed.

Generally, the refrigerator cooling method can be divided into indirect cooling and direct cooling. Indirect cooling is a method of forcing the cold air of a heat exchanger (evaporator) to be forcibly sprayed, which can maintain a constant temperature distribution in the furnace and has a high cooling rate. Direct cooling is performed by a heat exchanger ) Is embedded in the refrigerator.

Although the direct cooling method is advantageous from the structural point of view, there is a disadvantage in that it is not hygienic and space loss occurs due to a large amount of generated in the wall of the refrigerator during use, while the indirect cooling method can maintain the uniform temperature distribution It is very hygienic because there is no fear of loss of space because the cooling rate is fast,

However, the indirect cooling system also has a problem that the performance of the heat exchanger can not be exerted properly due to the surface of the heat exchanger (evaporator) disposed in the cool air generating chamber due to the moisture introduced into the inside of the refrigerator when the refrigerator is opened and closed. Accordingly, in the case of an indirect cooling type refrigerator, a defrosting heater for defrosting is installed around the heat exchanger.

The defrost heater operates according to the control of the control unit to generate heat to dissolve the castle. That is, a defrosting method applied to an indirect cooling type refrigerator in the related art is a method of directly removing frost on the surface of a heat exchanger by using radiant heat generated when a defrost heater is operated. The defrosting method operates in a pre- The surface which is thickly impregnated on the surface is removed.

The defrosting operation through the conventional defrosting device is set to be performed periodically by checking the cumulative operation time of the compressor irrespective of the degree of impregnation on the evaporator or the number of times the defrosting operation is performed. That is, the data relating to the amount of fuel injected in accordance with the compressor operation time is extracted through repeated experiments, and a system is constructed so that the defrosting operation is performed based on this data

As a result, the defrosting device is unnecessarily driven to increase the power consumption regardless of the property, even though the property is not generated or the refrigerating performance is not greatly affected, or the property is greatly affected to the refrigeration performance There is a problem that the performance of the refrigerator is significantly deteriorated because the defrosting device is not driven even though the defrosting operation is necessary.

Korean Patent Publication No. 2014-0047362 (Publication date 2014.04.22) Korean Patent Laid-Open Publication No. 2013-0034816 (Publication date 201.04.08)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a defrost control device for an indirect cooling system in which defrosting operation is performed at an optimal defrosting time point by determining a defrosting time period from a cumulative number of on / off times of a dryer operated according to an output value of a moisture- And a method is provided.

According to an aspect of the present invention,

A moisture sensor module disposed at an arbitrary position in the cold generating room in which the evaporator is mounted to sense moisture;

And a control unit for controlling the operation of the refrigerator defrost heater by determining a defrosting time from information obtained from the moisture sensor module,

The moisture sensor module includes:

A humidity sensor attached to the front surface of the substrate, and a sensor drier attached to the back surface of the substrate and operated on / off in accordance with a change in the output value of the humidity sensor to remove dew formed on the surface of the moisture sensor.

Wherein the control unit determines a defrosting time for starting the defrosting heater based on the cumulative number of times of on / off accumulation of the dryer for removing the sensor.

In the defrost control device according to one aspect of the present invention, the moisture sensor module may be disposed one by one at the inlet or the inlet and the outlet of the cold generating room.

When the output value of the humidity sensor reaches a preset upper limit value, the dryer is turned on by the controller. When the output value of the dryer is lowered to a preset lower limit value, The operation of the dryer can be stopped (OFF).

The sensor-destroying drier may be an electric heater that is turned on / off according to whether the control unit is allowed to energize.

If the counting result (A) is equal to or greater than a predetermined reference number (X), it is determined that the defrosting time has come, and the command for operating the defrost heater As shown in FIG.

According to another aspect of the present invention as a solution to the problem,

A first step of counting the number of on / off operations of the sensor-drier for on / off operation according to the output value of the moisture sensor unit disposed in the cold room of the indirect cooling type refrigerator;

And a second step of controlling the defrost heater operation of the refrigerator by comparing the counting result (A) with a preset reference number (X).

At this time, if the counting result (A) is equal to or greater than the reference number (X) in the second step, it is determined that the defrosting time has come, and control for activating the refrigerator defrost heater by the control unit may be performed.

According to the embodiment of the present invention, the defrosting timing is determined from the cumulative number of on / off times of the dryer that is operated according to the output value of the moisture sensor, and by controlling the defrosting to be performed at a precise time required for defrosting, It is possible to solve the problem of the conventional indirect cooling method in which defrosting is necessary but defrosting is not performed and the performance of the heat exchanger deteriorates.

That is, it is possible to prevent the defrost heater from being operated unnecessarily even though the defrosting is not performed enough to require defrosting, and power consumption can be prevented. On the contrary, even if defrosting is required, the defrost heater does not operate, The problem can be solved in advance. As a result, the performance and efficiency of the refrigerator can be greatly improved.

In addition, since the defrosting time is determined by estimating the amount of defrosting only by the cumulative number of times of operation of the dryer that is operated to dry the moisture sensor, the complicated control process such as the indirect cooling method can be omitted, , And the manpower and cost required to derive the corresponding control logic can be reduced by a simple control.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view of a defrost control apparatus according to an embodiment of the present invention applied to an indirect cooling type refrigerator; FIG.
2 is a block diagram of an indirect cooling refrigerator defrost apparatus including a defrost control apparatus according to an embodiment of the present invention;
FIGS. 3A and 3B are views showing an example of the installation of a defrost control device according to an embodiment of the present invention; FIG.
4 is a schematic side view of a moisture sensor module constituting a defrost control device according to an embodiment of the present invention.
5 is a control logic applied for defrost control by a defrost control apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, a detailed description of known configurations will be omitted, and a detailed description of configurations that may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, an indirect cooling type refrigerator will be described as an example of an indirect cooling system to which a defrost control apparatus according to an embodiment of the present invention is applied. Of course, the application of the indirect cooling type refrigerator is not limited to the preferred embodiment, and it can be applied to any cooling device that takes indirect cooling method such as indirect cooling type air conditioner.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary diagram illustrating a defrost control apparatus according to an embodiment of the present invention applied to an indirect cooling type refrigerator. FIG. First, a schematic configuration of an indirect cooling type refrigerator to which a defrost control device according to an embodiment of the present invention is applied will be described with reference to FIG.

Referring to FIG. 1, an indirect cooling type refrigerator 1 to which a defrosting device of a refrigerator according to an embodiment of the present invention is applied includes a main body 10 having a freezing room 100 and a refrigerating room (not shown) A freezer compartment door 20 rotatably attached to the front of the refrigerator compartment 10 for selectively opening and closing the freezer compartment 100 and the refrigerating compartment, and a refrigerator compartment door.

The freezer compartment 100 and the refrigerating compartment are partitioned by a partition wall (not shown) and may include a storage compartment 12 for storing food and a shelf 14 for partitioning the interior space up and down, have. A door basket 22 for storing food can be mounted on the rear surface of the freezer compartment door 20 and the ice maker 24 can be mounted on the rear surface of the freezer compartment door 20 depending on the type of the product.

Ice discharged through the ice maker 24 can be taken out from the outside when a dispenser (not shown) is provided in the freezing chamber door 20, and a cool air is generated in the rear of the freezing chamber 100 by exchanging the refrigerant and the air And the cool air generation chamber 300 is shielded by the evaporator cover 120. The cooler generation chamber 300 is provided with a cooler chamber 300 in which the evaporator 320 is accommodated.

A cool air duct 110 for guiding the cool air generated by the evaporator 320 is vertically extended on the upper portion of the evaporator cover 120. A blowing fan 330 is installed on the upper side of the evaporator 320 and the cool air generated by the evaporator 320 is blown by the blowing fan 330 through the cool air discharge port 111 formed in the cool air duct 110 And is discharged into the freezing compartment 100 through the freezing chamber 100.

A temperature sensor (not shown) provided in each of the freezer compartment and the refrigerating compartment continuously monitors the temperatures of the freezing compartment and the refrigerating compartment and sends the result to the controller 50 (see FIG. 2) A defrost heater 340 for removing the defrosted gas generated on the surface of the evaporator 320 or the cool air generating chamber 300 is provided below the evaporator 320.

The defrost heater 340 operates under the control of a control unit to be described later and melts the generated gas on the surface of the evaporator 320 or the cool air generation chamber 300 (the area surrounding the evaporator in the cool air duct) The humidity sensor module 350 installed at an arbitrary position in the cool air generation chamber 300 judges whether or not a defrosting time has come from the information sent from the humidity sensor module 350 and controls driving of the defrost heater 340.

A cool air inlet 311 for introducing the cool air circulated in the freezer compartment 100 to the evaporator 320 is provided at the lower side of the cool air duct 110. Inside the cool air inlet 311, A fan can be provided. A machine room 19 is formed on the lower side of the refrigerator 1, and a compressor 191 and a condenser (not shown) constituting a refrigeration cycle are installed in the machine room.

FIG. 2 is a block diagram of an indirect cooling refrigerator defrost apparatus including a defrost control apparatus according to an embodiment of the present invention, and FIG. 3 is a view illustrating an installation example of a refrigerator defrost control apparatus according to an embodiment of the present invention.

2 to 3, the refrigerator defrost apparatus includes a moisture sensor module 350, a control unit 50, and a defrost heater 340. The moisture sensor module 350 and the control unit 50 constitute the defrosting control unit and the defrost heater 340 is operated under the control of the control unit 50 at an appropriate time required to remove the defrosting, It melts the castle.

The controller 50 generally controls operation of various electrical components (a condenser, a compressor, a power supply unit, a sensor, etc.) constituting the refrigerator as well as the defrost heater 340. The defrost heater 340, And is operated by the defrost heater driving unit 344 driven by the command of the controller 50 to melt the frost on the surface of the evaporator 320.

The control unit 50 preferably judges whether or not the defrosting time comes from the information obtained from the humidity sensor module 350 (the cumulative operation frequency of a dryer to be described later), and when the defrosting time has come, The defrost heater driving unit 344 activates the defrost heater 340 for a predetermined time at the time when the defrost heater driving unit 344 receives an instruction from the control unit 50. [

The number and location of the moisture sensor module 350 may vary according to the size of the evaporator 320 according to the capacity of the refrigerator. It is not limited to a specific number or specific location, And may be configured to detect moisture that is a source of fumes at different locations of the chamber 300.

3A, the inlet I of the cold generating chamber 300 communicating with the cold air inlet 311 (see FIG. 1) of the cold air duct 110 and the cold air outlet 111 of the cold air duct 110, And the moisture in the air flowing through the inlet I and exiting through the outlet E after the heat exchange, respectively, at the outlet E of the cold-

3b, a cool air generation chamber 300 communicating with the cool air intake port 311 of the cool air duct 110 for sensing the moisture in the air flowing through the inlet I and determining the defrost time, Lt; RTI ID = 0.0 > I < / RTI >

2, reference numeral 52 denotes a power supply for supplying external power for driving the apparatus.

4 is a schematic side view of a moisture sensor module constituting a refrigerator defrost control apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the moisture sensor module 350 may be largely composed of a moisture sensor 352 and a sensor remover 354. Specifically, the moisture sensor 352 and the drier 354 for a sensor remover can be mounted so that the conductors are opposed to the front surface and the back surface of the substrate 353 with the substrate 353 printed in a predetermined pattern therebetween have.

The moisture sensor 352 is configured to include two electrodes opposed to one surface of the substrate 353 to detect moisture in the air inside the cooler generating chamber 300 and the drier 354 is disposed on the back surface of the substrate 353 And is operated in accordance with the output value of the moisture sensor 352 to evaporate and remove dew formed in the form of water droplets on the surface of the moisture sensor 352 in accordance with a sudden drop in temperature.

The moisture sensor 352 is a carbon resistor that electrically connects the two electrodes in such a way that the two electrodes can be energized, for example, when a thin carbon film is coated on a magnetic material or a resin plate, Or a capacitive system that senses moisture from changes in capacitance between electrodes that change during dew contact.

In the case of the carbon resistance method, the change of the resistance value depending on the moisture depending on the area of the carbon resistance may become insensitive or sensitive. Specifically, the smaller the area of the carbon resistance is, the more sensitive the change of the resistance value becomes, and the detection accuracy of the moisture sensor becomes higher. Therefore, in consideration of this point, it is advantageous to reduce the area of the carbon resistance in order to measure the minute humidity.

The dryer 354 functions to remove the dew formed on the surface of the moisture sensor 352 as described above. The dryer 354 is turned on and off according to the control of the controller 50 based on the output value of the moisture sensor 352 and generates heat according to the command of the controller 50 to dry the moisture sensor 351. Preferably, it may be an electric heater that is turned on / off according to whether the control unit 50 is allowed to conduct electricity.

The dryer 354 is turned on under the control of the controller 50 when the output value of the moisture sensor 352 reaches a predetermined upper limit value and the moisture sensor 352 The operation is stopped (OFF) by receiving the operation stop command output by the control unit 50 when the output value of the control unit 50 is lowered to the preset lower limit value.

In the arrangement of the moisture sensor unit 350, the moisture sensor 352 may be disposed so as to face upstream in the direction of air flow. For example, the moisture sensor unit on the outlet (E) side of the cold generating room 300 where the cool air escapes to the outside is installed so that the moisture sensor is facing the evaporator 320, The unit can be installed such that the moisture sensor is facing outward (see Fig. 3)

The controller 50 determines the defrosting time from the effective information received from the moisture sensor unit 350. Specifically, the defrosting timing is determined from the accumulated number of on / off operations of the sensor-drier 354 operated to remove dew formed on the surface of the moisture sensor 352. Based on the defrosting timing determination result, And controls the operation of the defrost heater 340.

Although not shown, the number of times the dryer is driven as a reference (X), which is a standard for determining the defrosting period, is input to the recording and storing unit (not shown). At this time, the reference number X is calculated by multiplying the cumulative value of accumulated dew on the evaporator by the cumulative value of the dew that is removed by the repeated operation of the dryer, and calculating the maximum number of times of operation of the dryer 354 Lt; / RTI >

The reference number (X) is not limited to a specific value since it may vary depending on various variables such as refrigerator capacity, structure, shape and volume of cold air generating chamber, evaporator size, shape and structure. It can be derived through repetitive simulation tests considering refrigerator capacity, structure, shape and volume of cold air generation room, and size, shape and structure of evaporator.

The control unit 50 continuously monitors the on / off state of the sensor fabricating dryer 354, counts the number of on / off operations, and compares the counting result A with the predetermined reference number X every time. If it is determined that the counting result (A) is equal to or greater than the reference number (X), it is determined that the defrosting time has come, and an operation command is output to the defrost heater 340 to perform defrosting.

The defrosting of the indirect cooling type refrigerator performed through the above-described defrosting control device will be briefly described in connection with the defrosting control through the defrosting control device.

FIG. 5 is a control logic used for defrost control performed through the defrost control device according to an embodiment of the present invention. In the case where the moisture sensor module is disposed at the inlet and the outlet of the cold generating room, Let's take an example where a module is deployed.

When the moisture sensor of the humidity sensor module detects moisture, the output value rises and when the rising output value reaches a certain value, the dryer operates. The dryer operation removes dew on the surface of the moisture sensor, so that the output of the moisture sensor returns to normal. At this time, the higher the humidity of the air flowing into the cold generating chamber, the more the number of on / off operations of the dryer increases.

The control unit continuously monitors the on / off operation of the dryer, which is operated to dry the moisture sensor, counts the number of on / off operations, and compares the counting result (A) with the preset reference number (X) at any time.

5A, the difference (A-A ') between the cumulative number of dryers on / off of the moisture sensor module disposed at the inlet and the outlet is calculated as If only one inlet is provided at the inlet, the defrosting time is determined by comparing the number of cumulative number of dryers on / off (A) of the humidity sensor module with the reference number (X).

If the counting result (AA 'or A) is equal to or greater than the preset reference number (X) as a result of comparison, the controller determines that the defrosting time has come and outputs an operation command to the defrost heater, The frost cast on the evaporator can be removed.

According to the present invention as described above, the defrosting time is determined from the cumulative number of times of on / off operation of the dryer operated according to the output value of the moisture sensor, and defrosting can be performed at an accurate time point It is possible to solve the problem of the conventional indirect cooling method in which the performance of the heat exchanger is deteriorated because defrosting is not performed even though defective defrosting or conversely defrosting is necessary.

That is, it is possible to prevent the defrost heater from being operated unnecessarily even though the defrosting is not performed enough to require defrosting, and power consumption can be prevented. On the contrary, even if defrosting is required, the defrost heater does not operate, The problem can be solved in advance. As a result, the performance and efficiency of the refrigerator can be greatly improved.

In addition, since the defrosting time is determined by estimating the amount of defrosting only by the cumulative number of times of operation of the dryer that is operated to dry the moisture sensor, the complicated control process such as the indirect cooling method can be omitted, , And the manpower and cost required to derive the corresponding control logic can be reduced by a simple control.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

50:
300: Cold generating room
320: Evaporator
340: Defrost heater
350: Moisture sensor module
352: Moisture sensor
353: substrate
354: dryer

Claims (7)

A moisture sensor module disposed at an arbitrary position in the cold generating room in which the evaporator is mounted to sense moisture;
And a control unit for controlling the operation of the refrigerator defrost heater by determining a defrosting time from information obtained from the moisture sensor module,
The moisture sensor module includes:
A humidity sensor attached to the front surface of the substrate, and a sensor drier attached to the back surface of the substrate and operated on / off in accordance with a change in the output value of the humidity sensor to remove dew formed on the surface of the moisture sensor.
Wherein the control unit determines a defrosting time for starting the defrosting heater based on the cumulative number of times the on / off accumulation of the sensor-destructor drier is completed.
The method according to claim 1,
Wherein the humidity sensor module is disposed one by one at an inlet or an inlet and an outlet of a cool air generating chamber.
The method according to claim 1,
When the output value of the moisture sensor reaches a preset upper limit value, the dryer is turned on by the control of the controller,
Wherein when the output value of the dryer is lowered to a predetermined lower limit value, the operation of the dryer is turned off by the control of the controller.
The method according to claim 1,
Wherein the sensor-destructor drier is an electric heater that is turned on / off according to permission or non-permission of energization of the control unit.
The method according to claim 1,
The control unit counts the number of on / off operations of the dryer for the sensor and determines that the defrosting time has come when the counting result (A) is equal to or greater than a preset reference number (X) Wherein the defrosting control unit is configured to control the defrosting control unit.
A first step of counting the number of on / off operations of the sensor-drier for on / off operation according to the output value of the moisture sensor unit disposed in the cold room of the indirect cooling type refrigerator;
And a second step of controlling the defrost heater operation of the refrigerator by comparing the counting result (A) with a preset reference number (X).
The method according to claim 6,
Wherein in the second step, when the counting result (A) is equal to or greater than the reference number (X), it is determined that the defrosting time has arrived, and control is performed by the controller to start the refrigerator defrost heater .
KR1020150155399A 2015-11-05 2015-11-05 Defrosting control apparatus and defrosting methods for indirectness cooling system KR101753755B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150155399A KR101753755B1 (en) 2015-11-05 2015-11-05 Defrosting control apparatus and defrosting methods for indirectness cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150155399A KR101753755B1 (en) 2015-11-05 2015-11-05 Defrosting control apparatus and defrosting methods for indirectness cooling system

Publications (2)

Publication Number Publication Date
KR20170053081A true KR20170053081A (en) 2017-05-15
KR101753755B1 KR101753755B1 (en) 2017-07-04

Family

ID=58739838

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150155399A KR101753755B1 (en) 2015-11-05 2015-11-05 Defrosting control apparatus and defrosting methods for indirectness cooling system

Country Status (1)

Country Link
KR (1) KR101753755B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109425168A (en) * 2017-09-04 2019-03-05 博西华电器（江苏）有限公司 Refrigerating appliance and its control method
CN109883127A (en) * 2019-03-06 2019-06-14 广东瑞星新能源科技有限公司 A kind of intelligent defrosting control method
CN110906644A (en) * 2019-10-09 2020-03-24 合肥晶弘电器有限公司 Dry goods storage method for freezing area of refrigerator and refrigerator
CN110906641A (en) * 2019-10-09 2020-03-24 合肥晶弘电器有限公司 Dry goods storage method suitable for refrigerator cold storage area and refrigerator
CN112066623A (en) * 2020-08-27 2020-12-11 西安交通大学 Heating power variable defrosting device of air-cooled refrigerator and control method
CN114992973A (en) * 2022-06-02 2022-09-02 海信（山东）冰箱有限公司 Method, device, equipment and medium for controlling maturation zone of refrigerator
CN117450740A (en) * 2023-12-19 2024-01-26 珠海格力电器股份有限公司 Quick freezing control method and device, quick freezer and storage medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109425168A (en) * 2017-09-04 2019-03-05 博西华电器（江苏）有限公司 Refrigerating appliance and its control method
CN109425168B (en) * 2017-09-04 2022-02-11 博西华电器（江苏）有限公司 Refrigeration appliance and control method thereof
CN109883127A (en) * 2019-03-06 2019-06-14 广东瑞星新能源科技有限公司 A kind of intelligent defrosting control method
CN110906644A (en) * 2019-10-09 2020-03-24 合肥晶弘电器有限公司 Dry goods storage method for freezing area of refrigerator and refrigerator
CN110906641A (en) * 2019-10-09 2020-03-24 合肥晶弘电器有限公司 Dry goods storage method suitable for refrigerator cold storage area and refrigerator
CN112066623A (en) * 2020-08-27 2020-12-11 西安交通大学 Heating power variable defrosting device of air-cooled refrigerator and control method
CN114992973A (en) * 2022-06-02 2022-09-02 海信（山东）冰箱有限公司 Method, device, equipment and medium for controlling maturation zone of refrigerator
CN117450740A (en) * 2023-12-19 2024-01-26 珠海格力电器股份有限公司 Quick freezing control method and device, quick freezer and storage medium
CN117450740B (en) * 2023-12-19 2024-05-17 珠海格力电器股份有限公司 Quick freezing control method and device, quick freezer and storage medium

Also Published As

Publication number Publication date
KR101753755B1 (en) 2017-07-04

Similar Documents

Publication Publication Date Title
KR101753755B1 (en) Defrosting control apparatus and defrosting methods for indirectness cooling system
US11867448B2 (en) Refrigerator and method for controlling the same
US6125641A (en) Method for preventing formation of ice on damper in refrigerator
US9243834B2 (en) Refrigerator
KR101143975B1 (en) Refrigerator
KR101643890B1 (en) Defrosting control apparatus and defrosting methods for refrigerator
US10113790B2 (en) Method for controlling refrigerator
KR101771721B1 (en) Refrigerator and its defrost control method
EP2578970B1 (en) Refrigerator
US10634414B2 (en) Method for operating a fan within a refrigerator appliance
KR20180052284A (en) Refrigerator and Controlling method for the same
KR20100065472A (en) Refrigerator and controlling method therefo
KR20180052285A (en) Refrigerator and Controlling method for the same
KR20160027761A (en) Frost sensing unit and defrosting apparatus including the same and defrosting methods for refrigerator
CN109906348B (en) Refrigerator and control method thereof
KR20100009676A (en) Refrigerator and method for controlling the same
KR20180052312A (en) Refrigerator and Controlling method for the same
KR101481489B1 (en) Control Device and Method for Defrosting of Refrigerator
KR20070103450A (en) A cooling device and a control method thereof
KR20230000231A (en) refrigerator
JP2012026592A (en) Refrigerator
KR20190097619A (en) Refrigerator
JP3819815B2 (en) Refrigerant leak detection method for refrigerator
EP4194775A1 (en) Refrigerator and operation control method therefor
WO2016070893A1 (en) Refrigeration appliance with improved refrigeration performance and energy consumption

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant