KR20170021533A

KR20170021533A - Defrosting system for cold storage

Info

Publication number: KR20170021533A
Application number: KR1020150116031A
Authority: KR
Inventors: 박광렬; 박주연
Original assignee: 주식회사 호암엔지니어링
Priority date: 2015-08-18
Filing date: 2015-08-18
Publication date: 2017-02-28

Abstract

The present invention relates to a defrosting system for a cold store, wherein a frost detecting camera measuring a change in a freezing area is installed to detect more accurate defrosting operation time for cooling efficiency of an evaporator to be increased. Therefore, an increase of a temperature and energy waste in the cold store can be prevented, and excessive power consumption can be prevented. Moreover, without discharging defrosting water, constant humidity can be maintained with defrosting water in a vaporized state, thereby maintaining optimal temperature for groceries like fruits within the cold store. Thus, the cold store can prevent decline of freshness or value of food with ease.

Description

{DEFROSTING SYSTEM FOR COLD STORAGE}

The present invention can use the dehydrated water in a vaporized state without discharging the dehydrated water to the outside of the low temperature storeroom so that the humidity in the low temperature storage tank can be maintained more easily and thereby the food such as fruits stored in the low temperature storage tank is optimized The present invention relates to a low temperature storage and defrosting system that can more easily prevent the deterioration of the product value and the freshness of the food because the humidity can be maintained.

Generally, the refrigerating and refrigeration cycle of a cooling apparatus includes a compressor for compressing refrigerant to a high temperature and a high pressure, a condenser for heat-exchanging the compressed refrigerant with the surroundings for condensation, an expansion valve for expanding the condensed refrigerant to low pressure, And an evaporator for exchanging heat with the internal air.

The surface temperature of the evaporator, which cools the storage space through such a cycle, is relatively low compared to the temperature of the storage space, so that the condensed moisture from the relatively high temperature storage space adheres to the surface of the evaporator, thereby depositing the frost.

The frost deposited on the surface of the evaporator gradually becomes thicker over time, which causes a problem that the heat exchange efficiency of the cool air passing through the evaporator is reduced and excessive power consumption occurs.

In order to solve this problem, a defrost heater is installed in the evaporator and defrosting operation for removing the frost deposited on the evaporator by driving the defrost heater according to the preset time has been performed. However, even if defrosting operation is not necessary, There is a problem that energy is wasted when the defrosting operation is required. On the contrary, when the defrosting operation is required, the defrosting operation is not performed. As a result, the heat exchange efficiency of the cool air passing through the evaporator is decreased.

A defrosting operation system capable of detecting the defrosting operation point without detection error using a temperature sensor has been developed. However, it is possible to detect the defrosting operation point indirectly by measuring the temperature, There is no description that the humidity in the low temperature reservoir can be maintained by using the decomposition water produced by the low temperature storage tank.

Korean Patent Registration No. 10-1042061 (Disclosure Date; Feb. 19, 2014)

It is an object of the present invention to provide a frost detection camera for measuring a change in a region in which ice is frozen to detect a more accurate defrosting operation timing to increase the cooling efficiency of the evaporator, It is possible to prevent excessive power consumption and to use the vaporized water in a vaporized state without discharging the purified water to the outside of the low temperature reservoir so as to more easily maintain the humidity in the low temperature reservoir, And the like can be maintained at an optimum humidity, so that it is possible to more easily prevent the deterioration of the merchandise value of the food and the freshness of the food.

According to the present invention, there is provided a low-temperature storage defrost system comprising an evaporator provided inside a low-temperature reservoir to generate cool air and a defrost heater for defrosting the evaporator, wherein the defrost system comprises: And a frost detection camera for detecting a frozen state by providing at least one evaporation unit in the evaporator, wherein the defrosting unit includes a vaporization unit in which evaporation water to be evaporated to fall from the heat exchange fin of the evaporation unit is stored, System can be provided.

Here, the frost detection camera can photograph the icing state of at least one of the heat exchanging pin or the vaporizing unit provided in the evaporator.

The controller may further include a controller for comparing the freezing state photographed by the frost detection camera to determine an operation time point of the defrost heater and controlling driving of the defrost heater.

The frost detection camera may be provided with a charge coupled device (CCD) camera including illumination, and the frost detection camera and the illumination may be driven by the control unit on a predetermined time basis.

Also, the frost detection camera may photograph the reflection amount of light reflected by the illumination, and the control unit may compare the gray scale value through the reflection amount to determine the defrost operation time point.

The frost detection camera may be provided with a thermal imaging camera capable of detecting infrared radiation heat. The frost detection camera is driven by the control unit at predetermined time intervals, and the control unit controls the infrared radiation heat detected by the frost detection camera The defrosting operation timing can be determined.

The controller may further include a transmitter for transmitting image information of the frost detection camera to the controller, and the transmitter may be at least one of USB, UART, and TCP / IP.

The apparatus may further include at least one status lamp for outputting light according to the freezing state, and the status lamp may be an LED light emitting diode.

The evaporator includes a storage tray in which evaporation water to be vaporized to fall from the heat exchange fin of the evaporator is stored therein and a groove is formed in an inner lower side of the storage tray, And a vaporizing member for vaporizing the constant, and the vaporizing member may be made of an ultrasonic vibrator.

Meanwhile, the vaporizing unit may include a storage tray in which evaporative water to be vaporized to fall in the heat exchange fin of the evaporator is stored, and a vaporizing member provided in the storage tray to vaporize the purified water stored in the storage tray .

The evaporation member may include a rotation shaft provided in the storage tray and a plurality of evaporation plates disposed at predetermined intervals on the rotation shaft and rotating in the normal and reverse directions along the rotation axis and a driving member rotating the rotation shaft.

A guide rail plate for guiding the inlet and outlet of the evaporator to one side of the inlet and the other inlet of the inlet so as to be located in the lower side of the evaporator is formed on the lower side of the evaporator, .

A guide plate for guiding the defrosted water vaporized in the vaporizing unit to the blowing fan of the evaporator may be formed on one side of the vaporizing unit, and a heating member installed on the lower side of the vaporizing unit to prevent freezing As shown in FIG.

Here, the heating member may be a heating coil.

In addition, the low temperature storage defoaming system may include a humidity sensor for sensing the humidity inside the low temperature reservoir, a water level sensor for sensing the level of the defrost water stored in the evaporation unit, a temperature sensor for detecting the temperature of the defrost water stored in the evaporation unit And a control unit for controlling the vaporization unit according to a detection signal of each of the sensors.

In addition, an alarm sound output unit for outputting an alarm sound under the control of the control unit according to the detection signal of the water level sensor, and a humidity input unit for inputting a reference humidity value in the low temperature storage unit to the control unit.

The replenishment water supply unit may include a replenishment water storage tank in which replenishment water to be supplied to the inside of the vaporization unit is stored and a replenishment water storage tank in the lower part of the replenishment water storage tank A supply line for supplying the makeup water in the makeup water storage tank to the vaporizing unit in a state where one end is connected and the other end is located in the upper direction of the vaporizing unit, and a first open / close valve for opening / closing the supply line.

The heat transfer unit may include a condenser for discharging condensation heat for heating the makeup water and a condenser for heating the makeup water of the makeup water supply unit such that one end is connected to one side of the condenser, And a second opening / closing valve connected to a part of the replenishment water supply unit to shut off the opening and closing of the hot transfer line, the hot transfer line being conveyed by the condensation heat of the condenser.

In addition, it may be provided with a defrost water storage unit for storing the defrost water discharged from the vaporization unit. The defrost water storage unit includes a defrost water storage tank for storing the defrost water discharged from the vaporization unit, And a discharge line formed between the vaporizing units and discharging the defrost water in the vaporizing unit to the defrost water storage tank.

A frost detection camera is provided to measure a change in a region where ice formation progresses to detect a more accurate defrosting operation timing to increase the cooling efficiency of the evaporator, thereby preventing a rise in temperature and energy waste in the low temperature storage, And it is also possible to use the vaporized water in a vaporized state without discharging the purified water to the outside of the low temperature reservoir to more easily maintain the humidity in the low temperature reservoir. As a result, It is possible to maintain the optimized humidity and to more easily prevent the deterioration of the product value and the freshness of the food.

1 is a cross-sectional view schematically showing a low-temperature, stored, defrosted defoaming system according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view schematically showing a state in which vaporized water stored in the vaporization portion of an example is vaporized. FIG.
3 is a perspective view schematically showing a low-temperature storage, defoaming system, which is another embodiment of the present invention.
FIG. 4 is an exploded perspective view schematically showing a state in which the vaporization portion is separated in the evaporator of FIG. 3; FIG.
5 is a cross-sectional view taken along the line A-A of Fig.
6 is a cross-sectional view taken along the line B-B in Fig.
7 is a cross-sectional view schematically showing another example of the vaporizing member.
8 is a cross-sectional view taken along the line C-C in Fig.
9 is a block diagram schematically showing the control state of the control unit.
10 is a cross-sectional view schematically showing the replenishment water supply unit and the defrost water storage unit.
11 is a cross-sectional view schematically showing the heat transferring portion.
12 is a cross-sectional view schematically showing a modified example of the heat transferring part.
13 is a cross-sectional view schematically showing another modification of the heat transferring portion.
14 is a cross-sectional view schematically showing still another modification of the heat transferring portion.
15A is a perspective view showing a modified example of the hot transfer line shown in FIG.
Fig. 15B is a bottom perspective view of the hot transfer line shown in Fig. 15A. Fig.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in order to avoid unnecessarily obscuring the subject matter of the present invention.

FIG. 1 is a cross-sectional view schematically showing a defrosting apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing a state in which defrost water stored inside an evaporating unit 30 is vaporized.

1 and 2, the low temperature storage defrost system, which is one embodiment of the present invention, includes an evaporator 10, a defrost heater (not shown), a frost detection camera 20 and a vaporizer 30 .

First, the evaporator 10 is installed in a low-temperature reservoir (not shown) to generate cold air.

The evaporator 10 includes a main body 110, a blowing fan 120 provided at one side of the main body 110, and a heat exchange fin 130 provided at the other side of the main body 110.

Next, the defrost heater (not shown) is provided inside the main body 110 of the evaporator 10 for defrosting the evaporator 10.

The evaporator 10 and the defrost heater (not shown) are well known in the Korean Patent Registration No. 10-1042061, and a detailed description thereof will be omitted.

Next, at least one frost detection camera 20 may be provided inside the evaporator 10 to image image information inside the evaporator 10.

Here, the frost detection camera 20 of the embodiment of the present invention is preferably a charge coupled device (CCD) camera capable of transferring digital data by converting an image into an electrical signal using a charge coupled device (CCD) , The charge coupled device camera includes an illumination (25) for measuring the amount of reflection of the object.

Meanwhile, the frost detection camera may be equipped with a thermal imaging camera that shapes the difference of the wavelength of infrared rays into an image and detects infrared radiation radiated according to the surface temperature of the object.

Hereinafter, the CCD camera and the thermal imaging camera are known technologies that are conventionally performed, and a detailed description thereof will be omitted here.

The frost detection camera 20 is provided in the evaporator 10 to capture the icing state of the heat exchange fin 130, the storage tray 300, or the blowing fan 120 as described above, (Not shown) by the control unit 90. The control unit 90 may control the operation of the defrost heater (not shown) by transmitting the information to the control unit 90 to be described later and analyzing the image information transmitted to the control unit 90, have.

1, the frost detection camera 20 is provided inside the evaporator 10 so that the frost detection camera 20 can photograph the freezing state of the heat exchange fin 130 The present invention is not limited thereto and may be variously arranged as long as the storage tray 300 or the ventilating fan 120 can take a picture of the freezing state of the evaporator 10. In order to photograph the freezing state of the surface of the evaporator 10, And may further be provided outside the evaporator 10.

A specific method for determining the operation time point of the defrost heater (not shown) through the frost detection camera 20 will be described later in detail.

Next, the vaporizing unit 30 is horizontally provided on the inner lower side of the evaporator 10 so as not to be pulled out of the evaporator 10.

In the vaporization unit 30, a defrost water to be vaporized to fall in the heat exchange fin 130 of the evaporator 10 is stored.

As shown in FIG. 2, the vaporization unit 30 may include a storage tray 300 and a vaporization member 330.

In the storage tray 300, the defrost water to be vaporized to fall in the heat exchange fin 130 of the evaporator 10 may be stored.

The vaporizing member 330 may vaporize the dehydrated water stored in the storage tray 300.

For example, grooves 310 may be formed in the lower portion of the storage tray 300 of the vaporization unit 30, and the vaporization member 330 may be formed of an ultrasonic vibrator or the like.

More specifically, the groove 310 is formed in the lower surface 311 of the storage tray 300 of the vaporization unit 30 at a lower portion of the storage tray 300 at the upper portion of the storage tray 300 It can be recessed to a certain depth.

The vaporization member 330, which may be an ultrasonic vibrator or the like, may be provided in the groove 310.

The heating member 350 may be further provided to perform a thawing operation to prevent freezing of the distilled water stored in the storage tray 300 of the vaporization unit 30. [

The heating member 350 may be formed of a heating coil capable of heating the defrosted water. The heating member 350 may include a heating coil, which is disposed inside the storage tray 300 of the vaporization unit 30 .

Here, when the heating member 350 is provided as a heating coil, power may be supplied by a power supply unit 910 to be described later.

FIG. 3 is a perspective view schematically showing a low-temperature storage and defoaming system according to another embodiment of the present invention, FIG. 4 is an exploded perspective view schematically showing a state in which the evaporator 30 is separated from the evaporator 10 of FIG. 3, 5 is a cross-sectional view taken along the line A-A in Fig. 4, and Fig. 6 is a cross-sectional view taken along line B-B in Fig.

The low temperature storage defrosting system of the present invention is constructed in the same manner as the embodiment of the present invention. In order to easily perform replacement maintenance of the storage tray 300 of the vaporization unit 30, 3 to 6, the evaporator 10 includes a main body 110 of the evaporator 10 and a main body 110 of the evaporator 10, As shown in FIG.

More specifically, as shown in FIG. 4, a draw-in port 111 through which the storage tray 300 is inserted and removed may be formed below the main body 110 of the evaporator 10.

A guide rail plate (not shown) is installed on one side of the inlet / outlet 111 and on the other side of the inlet / outlet 111 so as to be positioned below the main body 110 of the evaporator 10, (112) may be vertically formed.

The guide rail plate 112 may be formed to extend longitudinally from a front side of the main body 110 of the evaporator 10 to a rear side of the main body 110 of the evaporator 10.

FIG. 7 is a cross-sectional view schematically showing another example of the vaporizing member 330, and FIG. 8 is a cross-sectional view taken along line C-C of FIG.

7 and 8, the evaporation member 330 of the evaporation unit 30 may be formed of an ultrasonic vibrator or the like. Alternatively, the evaporation member 330 may include a rotary shaft 331, A vaporizing plate 332, and a driving member 333.

The rotation shaft 331 may be formed to extend longitudinally from a front side of the storage tray 300 to a rear side of the storage tray 300 by a predetermined length.

The front side of the rotation shaft 331 may be coupled to the front side of the storage tray 300 so that the rotation shaft 331 is disposed inside the storage tray 300, And may be coupled to the rear side of the storage tray 300.

The evaporation plate 332 is provided on the rotation axis 331 in a direction from the front side of the rotation axis 331 to the rear side of the rotation axis 331 in a state in which the rotation axis 331 horizontally penetrates the center portion of the evaporation plate 332, And the evaporation plate 332 is vertically provided at a predetermined interval and is rotated in the normal and reverse directions along the rotation axis 331 to evaporate the distilled water stored in the storage tray 300. The evaporation plate 332 is a registered trademark of the Korean Registered Utility Model No. 20-0369078, etc., and the detailed description will be omitted.

The driving member 333 may include a driving motor 333a, an upper rotating body 333b, a lower rotating body 333c, and a torque transmitting member 333d as shown in FIG.

More specifically, a support plate 301 extending horizontally in the forward direction of the storage tray 300 may be formed on the inner peripheral surface of the rear upper side of the storage tray 300.

A through hole 301a may be formed at the center of the front side of the support plate 301.

The driving motor 333a may be horizontally fixed to the support plate 301 in various manners such as bolts.

The upper rotating body 333b may be axially coupled to the driving shaft of the driving motor 333a.

The lower rotating body 333c may be vertically provided on the rear side of the rotating shaft 331 with the rotating shaft 331 horizontally passing through the center of the lower rotating body 333c.

The upper portion of the rotational force transmitting member 333d may be wound around the upper peripheral surface of the upper rotating body 333b while the rotational force transmitting member 333d vertically penetrates the through hole 301a of the supporting plate 301 And the lower portion of the rotation force transmitting member 333d may be wound around the lower outer peripheral surface of the lower rotating body 333c.

As the drive shaft of the drive motor 333a rotates in the forward and reverse directions under the control of the control unit 90 to be described later, the evaporation plate 332 can be rotated in the forward and reverse directions together with the rotation shaft 331. [

The upper rotating body 333b and the lower rotating body 333c may be a pulley, a sprocket, a timing gear, or the like.

The rotational force transmitting member 333d may be a belt wound on the outer circumferential surface of the pulley, a chain wound around the outer circumferential surface of the sprocket, a timing belt wound around the outer circumference of the timing gear, or the like.

2 and 5, in order to more easily guide the defrost water dropping from the heat exchange fin 130 of the evaporator 10 toward one side of the interior of the storage tray 300 of the vaporizing unit 30, As shown in the figure, the inclined surface 320 may be formed on the other side of the storage tray 300 of the vaporization unit 30. [

The inclined surface 320 is inclined downward toward the bottom surface 311 of the inner side of the storage tray 300 of the vaporization part 30 from the upper side of the inclined surface 320 toward the lower side of the inclined surface 320, ).

Next, a guide plate 50 for guiding the defrost water vaporized in the evaporator 30 to the blowing fan 120 of the evaporator 10 may be formed.

2, the guide plate 50 may be formed on one side of the storage tray 300 of the vaporization unit 30. In this case,

5, the guide plate 50 may be formed on the guide rail plate 112 formed on one side of the inlet / outlet 111. In this case,

The guide plate 50 may be inclined upwards in the direction of the blowing fan 120 from the lower side of the guide plate 50 toward the upper side of the guide plate 50.

9 is a block diagram schematically showing the control state of the control unit 90. As shown in Fig.

9, a status lamp 45, a water level sensor 360, a humidity sensor 70, an alarm sound output unit 40, a humidity input unit 370, and a temperature sensor 340 may be further provided .

Before describing the status lamp 45, a detailed method for determining the operation time point of the defrost heater (not shown) through the frost detection camera 20, which is a temporary example of the present invention, will be described in detail.

The frost detection camera 20 can be installed on the inside of the evaporator 10 to capture the icing state of the heat exchange fin 130 provided in the evaporator 10 as described above.

Hereinafter, the case where the frost detection camera 20 is a CCD camera will be described.

The frost detection camera 20 is preferably provided with an illumination unit 25 for detecting the amount of reflection of light reflected from a subject.

The illumination 25 may be variously applied as long as it is a light source that can emit sailing light and detect the amount of reflection of the frost detection camera 20. For example, the LED 25 may be provided.

The frost detection camera 20 and the illumination 25 can be driven by a signal of the control unit 90 so that the illumination 25 does not emit light when the frost detection camera 20 is not driven It is desirable that unnecessary power is not consumed.

The control unit 90 may be installed at various positions such as the outer circumferential surface of the main body 110 of the evaporator 10 to control the driving of the frost detection camera 20 and the defrost heater (not shown).

The frost detection camera 20 photographs the heat exchange fin 130 which is a subject constructed inside the evaporator 10 by a predetermined time unit by the control unit 90 and sends the photographed image information to the control unit 90 Lt; / RTI >

Here, it is preferable that the predetermined time is in units of 30 minutes, but it is not limited to this, and it is preferable to set it appropriately according to the surrounding environment.

The frost detection camera 20 may further include a transmission unit (not shown) capable of transmitting the image information photographed by the frost detection camera 20 to the control unit 90. The transmission unit may include various types such as USB, UART, TCP / Lt; / RTI >

Then, the controller 90 may compare and calculate the transmitted image information to calculate a gray scale change value.

The gray scale is divided into gradual lightness ranging from white to full black. The gray scale change value indicates the amount of reflection of light that increases as the moisture adheres to the heat exchange fin 130 and the frost is deposited. .

More specifically, in an embodiment of the present invention, the image information necessary for determining the defrosting operation time is the amount of reflection of light, which is transmitted to the heat exchange pins (not shown) by the illumination 25 of the frost detection camera 20 in a fixed illumination environment 130, the amount of light reflected is constant, but as the frost is deposited, the amount of reflection of light increases due to the evaporated frost, so that the brightness changes, and the gray scale change value can be calculated according to the change in brightness.

Accordingly, the degree of freezing of the heat exchange fin 130 can be determined as the amount of reflection of light reflected from the heat exchange fin 130 increases and the change value of the gray scale increases.

The operator preferably inputs a gray scale reference change value for the defrost operation of the defrost heater (not shown) to the control unit 90. [

The control unit 90 can determine the defrosting operation timing using the change value of the gray scale thus calculated and outputs a driving signal to the defrost heater (not shown) to drive the defrost heater (not shown) And the frost can be removed.

The state lamp 45 may be provided at various positions such as the outer surface of the main body 110 of the controller 90 or the evaporator 10 so that the freezing of the heat exchanging fin 130 Can be output.

If the gray scale change value is smaller than or equal to the gray scale value of the normal state as a result of analyzing the image information, the status lamp 45 may be connected to the controller 90 The status lamp 45 outputs green, and when the gray scale change value is larger than the grayscale value of the steady state, it outputs a yellow color as an indication that freezing is in progress and a large amount of frost is deposited, Or the defrosting operation time point, it is preferable to provide a red color so that the operator can visually confirm the frost state.

Meanwhile, when the frost detection camera 20 is equipped with a thermal imaging camera, the frost detection camera measures the surface temperature of the heat exchange fin 130.

As the freezing of the heat exchange fin 130 progresses, the controller 90 compares the infrared radiation emitted according to the changed surface temperature, and the controller 90 can determine the degree of freezing.

The operator inputs the reference radiant heat value for the defrost operation of the defrost heater (not shown) into the controller 90.

Using the measured radiant heat value, the controller 90 can determine the defrosting operation timing and outputs a driving signal to the defrost heater (not shown) to control the driving of the defrost heater (not shown) , The frost can be removed.

The status lamp 45 may be composed of at least one LED light emitting diode. When the radiating heat value is higher than or equal to the normal radiating heat value as a result of analyzing the image information, When the radiant heat value is lower than the steady state radiant heat value, the lamp 45 outputs a yellow color as an indication that the freezing is in progress, and a large amount of frost is deposited and the reference radiant heat And when the defrosting operation is started, it is preferable to provide a red color so that the operator can visually confirm the frost state.

The water level sensor 360 may be disposed below the inner circumferential surface of one side of the storage tray 300 of the vaporization unit 30 to sense the level of the defrost water stored in the storage tray 300.

The control unit 90 may control the vaporization member 330 of the vaporization unit 30 according to a detection signal of the water level detection sensor 360.

When the water level sensor 360 senses the defrost water stored in the storage tray 300 of the evaporator 30 under the control of the controller 90, the evaporator 330 of the evaporator 30 May supply the power from the power supply unit 910 to continuously vaporize the purified water stored in the storage tray 300. [

If the water level sensor 360 does not detect the defrost water stored in the storage tray 300 of the evaporator 30 under the control of the controller 90, The supply of power to the evaporation member 330 of the evaporator 30 and the blower fan 120 is cut off and the evaporator 330 of the evaporator 30 can be prevented from being overheated.

6, the temperature sensor 340 is provided on an inner circumferential surface of one side of the storage tray 300 of the vaporization unit 30 to measure the temperature of the defrost water stored in the storage tray 300 .

The control unit 90 may control the heating member 350 of the vaporization unit 30 according to the reference temperature value input to the controller 90 and the measurement signal of the temperature sensor 340.

The reference input value is preferably set to a temperature at which the defrost water starts to freeze.

When the temperature of the defrost water stored in the storage tray 300 measured by the temperature sensor 340 is equal to or lower than a reference temperature value of the control unit 90, The heating member 350 may be supplied with power from a power supply unit 910 that supplies power to the vaporizing member 330 to prevent freezing of the purified water stored in the storage tray 300. [

The humidity sensor 70 may be disposed inside the low temperature reservoir (not shown) to sense the humidity inside the low temperature reservoir (not shown).

The control unit 90 may control the vaporization member 330 of the vaporization unit 30 according to the reference humidity value input to the controller 90 and the detection signal of the humidity sensor 70.

If the humidity value in the low temperature storage (not shown) sensed by the humidity sensor 70 is equal to or higher than the reference humidity value input to the controller 90, the controller 90 controls the power supply 910 The power supply to the evaporation member 330 of the evaporation unit 30 and the blowing fan 120 can be cut off, respectively.

If the humidity value in the low temperature storage (not shown) sensed by the humidity sensor 70 is less than the reference humidity value input to the controller 90, the controller 90 controls the power supply 910 Power can be supplied to the vaporizing member 330 of the vaporizing unit 30 and the blowing fan 120 so that the vaporizing member 330 of the vaporizing unit 30 is stored in the storage tray 300 It becomes possible to vaporize the residual water.

The alarm sound output unit 40 may be a speaker or the like.

The alarm sound output unit 40 is provided at various positions such as the outer circumferential surface of the main body 110 of the evaporator 10 and can output an alarm sound such as a siren sound under the control of the controller 90. The alarm sound output unit 40 may also be configured to output an alarm sound even when the status lamp 45 outputs a yellow or red output.

More specifically, when the water level sensor 360 does not sense the defrost water stored in the storage tray 300, the alarm sound output unit 40 may be controlled by the control unit 90, And outputs a sound.

In this case, in particular, in the case of another embodiment of the present invention, the operator pulls the storage tray 300 out of the main body 110 of the evaporator 10 to the outside of the evaporator 10, The storage tray 300 may be retracted into the main body 110 of the evaporator 10 after replenishing with water or the like.

The operator may input the reference humidity value in the low temperature reservoir (not shown) to the controller 90 by operating the humidity input unit 370 have.

The humidity input unit 370 may be provided in various ways such as a push button or a dial button on the controller 90 or the like.

The control unit 90 may control the vaporization member 330 of the vaporization unit 30 by comparing the detection signal of the humidity sensor 70 with the reference humidity value input to the control unit 90. [

Next, the terminal unit 100 may be further provided as shown in FIG. 6 only in the case of another embodiment of the present invention.

The terminal unit 100 may include a connection terminal 101 and a power supply terminal 102.

The connection terminal 101 may be formed on the rear side of the storage tray 300 of the vaporization unit 30. [

The power supply terminal 102 is provided on the lower rear side of the inner circumferential surface of the main body 110 of the evaporator 10 facing the connection terminal 101 and is connected to the connection terminal 101 The power supply unit 910 can be supplied with the heating member 350 and the vaporization member 330 of the vaporization unit 30 connected to each other through a connection line such as a wire.

The power supply terminal 102 may be connected to the power supply unit 910 through a connection line such as an electric wire.

10 is a cross-sectional view schematically showing the replenishment water supply unit 80 and the defrost water storage unit 400. As shown in FIG.

10, a supplemental water supply unit 80 for supplying supplemental water into the storage tray 300 of the vaporization unit 30 may be further provided.

The replenishing water supply unit 80 may include a replenishing water storage tank 810, a supply line 820, and a first opening / closing valve 830.

The makeup water storage tank 810 may be provided in the other side of the evaporator 10 so as to be provided in a low temperature storage tank (not shown) while being exposed to the outside of the main body 110 of the evaporator 10.

The supplementary water such as water to be supplied into the storage tray 300 of the vaporization unit 30 may be stored in the supplementary water storage tank 810.

The supply line 820 may be a pipe, a hose, or the like.

The upper portion of the supply line 820 may be watertightly connected to the lower portion of the replenishment water storage tank 810.

The lower part of the supply line 820 is located in the upper direction of the other side of the storage tray 300 of the vaporizing part 30 while horizontally passing the lower side of the other side of the main body 110 of the evaporator 10, The replenishment water in the storage tank 810 can be supplied into the storage tray 300 of the vaporization unit 30. [

The first on-off valve 830 may be provided on the supply line 820.

The first on-off valve 830 may be an electronic solenoid valve that automatically opens and closes the supply line 820 under the control of the controller 90.

More specifically, when the water level sensor 360 does not detect the dehydrated water stored in the storage tray 300 of the evaporator 30, the controller 90 controls the power supply unit 910, The supply of power to the evaporation member 330 and the blowing fan 120 of the evaporation unit 30 is interrupted and the alarm sound output unit 40 outputs an alarm sound and the first on- 830 open the supply line 820 of the replenishment water supply unit 80 so that replenish water such as water can be supplied into the storage tray 300 of the vaporization unit 30. [

When the water level sensor 360 detects the defrost water stored in the storage tray 300, the control unit 90 controls the power supply unit 910 to supply the vaporized water to the vaporization unit 30, The first open / close valve 830 is connected to the supply line 820 of the replenishment water supply unit 80, and the alarm sound output unit 40 is deactivated, ).

Next, as shown in FIG. 10, a defrost water storage unit 400 may be further provided to store the defrosted water discharged from the storage tray 330 of the evaporator 30.

The defrost water storage unit 400 may include a defrost water storage tank 410 and a discharge line 420.

The dehydrated water storage tank 410 may be provided in one side of the evaporator 10 in a state where the dehydrated water storage tank 410 is exposed to the outside of the main body 110 of the evaporator 10 in a low temperature storage tank (not shown).

The defrost water discharged from the storage tray 300 of the evaporator 30 may be stored in the defrost water storage tank 410.

Next, the discharge line 420 may be a pipe, a hose, or the like.

The discharge line 420 extends horizontally between one side of the main body 110 of the evaporator 10 and the storage tray 300 of the evaporator 30, And discharges the defrost water in the storage tray 300 of the vaporization unit 30 into the defrost water storage tank 410.

One side of the discharge line 420 may be watertightly connected to an upper portion of the opposite side of the one side of the defrost water storage tank 710.

The other side of the discharge line 720 may be connected to an upper portion of one side of the storage tray 300 of the vaporization unit 30 so as to be positioned in the upper direction of the water level detection sensor 80 .

10, a discharge port 300a may be formed at an upper portion of the guide rail plate 112 vertically formed at one side of the inlet port 111 and at an upper side of the storage tray 300, respectively, as shown in FIG. 10, And the other side of the discharge line 720 may be watertightly connected to the discharge port 300a of the guide rail plate 112 formed perpendicularly to one side of the inlet and outlet 111. [

The defrost water in the storage tray 300 can be discharged into the defrost water storage tank 410 through the discharge line 420 so that the defrost water does not overflow in the storage tray 300 .

Next, as shown in FIG. 11, the heat transfer unit 60 may be provided to heat the make-up water stored in the makeup water storage tank 810 of the makeup water supply unit 80 to prevent freezing of the makeup water. The heat transfer unit 60 may include a condenser 610, an heat transfer line 620, and a second open / close valve 630.

The condenser 610 converts the refrigerant into a high-pressure liquid state, which is essential in a refrigeration cycle and is a general technique, and a detailed description thereof will be omitted here.

One end of the hot transfer line 620 is connected to the condenser 610 and the other end of the hot transfer line 620 is connected to a makeup water storage tank 810 of the makeup water supply unit 80 to connect the condenser 610 and the makeup water storage tank 810).

The supplementary water storage tank 810 communicated with the condenser 610 through the hot transfer line 620 can be supplied with the high temperature condensation heat discharged from the condenser 610, The second open / close valve 630 is provided on the hot transfer line 620.

The second on-off valve 63 may be an electronic solenoid valve that automatically opens and closes the hot transfer line 620 under the control of the controller 90.

A method of preventing the storage tray 300 from being frozen through the heat transferring unit 60 will be described with reference to FIG. 6. As shown in FIG. 6, in the temperature sensor 340 provided in the storage tray 300, The control unit 90 opens the second on-off valve 63 so that the high temperature heat of the condenser 610 flows into the makeup water storage tank 810 The supplementary water in the replenishing water storage tank 810 can be heated and the replenishing water heated in the replenishing water storage tank 810 can be opened by opening the first opening / So that it is possible to prevent the freezing of the distilled water stored in the storage tray 300 by using the heat of condensation discharged into the atmosphere.

The heat transfer unit may be applied to various modifications. Hereinafter, a modification of the heat transfer unit 60 will be described in detail.

12, the hot transfer unit 60 receives the low-temperature defrost water stored in the defrost water storage unit 400, firstly heats the defrost water using the high-temperature heat of the condenser 610, A constant can be supplied to the replenishment water supply unit 80. [

It is preferable that the inflow line 640 is provided to allow the low temperature defrost water stored in the defrost water storage tank 410 of the defrost water storage 400 to flow into the condenser 610 of the heat transferring unit 60, The condenser 610 may further include a heating tray 615 for storing the defrost water flowing from the inflow line 640 and for heating the defrost water stored through the high temperature heat.

One end of the inflow line 640 is connected to the lower side of the defrost water storage tank 410 and the other end of the inflow line 640 is connected to the heating tray 615 of the condenser 610, And a third on-off valve 640 may be provided.

The third on-off valve 640 may be an electronic solenoid valve that automatically opens and closes the hot transfer line 65 under the control of the controller 90.

It is preferable that one end of the heat transfer line 620 of the heat transfer unit 60 is connected to the heating tray 615 and the other end thereof is connected to one side of the supplementary water storage tank 810, The storage tank 810 preferably further includes a heating device (not shown) capable of heating the replenishing water stored therein.

A method of preventing the storage tray 300 from being frozen through the heat transfer unit 60 configured as described above will now be described with reference to FIG. 12. As shown in FIG. 12, in the temperature sensor 340 provided in the storage tray 300, The control unit opens the third on-off valve 640 to discharge the low-temperature defrost water stored in the defrost water storage tank 410 to the condenser (not shown) 610, and the condenser firstly heats the distillation water stored in the heating tray 615. [

The control unit 90 opens the second opening and closing valve 630 of the hot transfer line 620 to transfer the high temperature defrost water of the heating tray 615 to the replenishing water storage tank 810, And is secondarily heated in the makeup water storage tank 810. Thereafter, the first opening / closing valve 830 is opened to allow the supplemented water heated in the replenishing water storage tank 810 to be supplied to the storage tray 300, 300 can be prevented from freezing.

13, the heat transfer line 620 of the heat transfer unit 60 is not connected to the makeup water storage tank 810 of the makeup water supply unit 80, One end is extended from the condenser 610 and the other end is extended through one side of the main body 110 of the evaporator 10 so that high temperature condensation heat discharged from the branch 610 can be supplied to the storage tray 300 The steam is supplied from the defrost water storage tank 410 and heated by the heating tray 615 of the condenser 610 to the storage tray 300 It is possible to consider that freezing of the distillation water stored in the freezing chamber can be prevented.

14, the hot transfer line 65 of the heat transfer unit 60 is connected to the condenser 610 so that the high-temperature condensation heat discharged from the condenser 610 can be supplied to the storage tray 300, And the other end may extend from one side of the main body 110 of the evaporator 10 to the storage tray 300 of the vaporizing part. It is preferable that the second opening / closing valve 630 for interrupting the puff of the hot transfer line 620 is provided on the hot transfer line 620.

The second on-off valve 630 may be an electronic solenoid valve that automatically opens and closes the hot transfer line 65 under the control of the controller 90.

6, the temperature sensor 340 provided in the storage tray 300 measures the temperature of the storage tank 300, The control unit 90 opens the second on-off valve 630 so that the high-temperature heat of the condenser 610 is supplied to the vaporizing unit 30 when the temperature of the vaporizing unit 30 is lower than the reference temperature value of the control unit 90, It is possible to prevent the freezing of the distilled water stored in the storage tray 300 by using the heat of condensation discharged to the atmosphere.

15A and 15B, one end of the heat transfer line 620 of the heat transfer unit 60 is extended from the condenser 60 and a part of the heat transfer line 620 is bent at the lower surface of the storage tray 300 And it is possible to prevent the defrost water stored in the storage tray 300 from being frozen through the high-temperature condensation heat discharged from the condenser 60 and transferred.

Here, the other end of the hot transfer line 620 may be extended to the outside of the low-temperature reservoir (not shown).

The shape of the heat transfer line 620 folded in contact with the lower part of the storage tray 300 is not limited to that shown in FIG. 15B, and the heat transfer line 620 may be formed in the storage tray 300 along the heat transfer line 620 It can be applied variously as long as the conveying high temperature condensation heat can be transferred.

The present invention configured as described above is provided with a frost detection camera for measuring the reflection amount of the area where ice is being frozen to detect a more accurate defrosting operation point to increase the cooling efficiency of the evaporator, thereby preventing a rise in temperature and energy waste in the low- And it is possible to prevent excessive power consumption and to use the vaporized water in a vaporized state without discharging the purified water to the outside of the low temperature storage tank (not shown), so that the humidity in the low temperature storage tank (not shown) As a matter of course, the food such as fruit stored in the low-temperature reservoir (not shown) can maintain the optimized humidity, so that it is possible to more easily prevent the decrease in the product value and the freshness of the food.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It should also be understood that many modifications and variations are possible without departing from the scope of the invention, as would be understood by one of ordinary skill in the art

10; An evaporator 20; Frost detection camera
25; Illumination 30; Vaporizing portion
40; Alarm sound output unit 45; Status lamp
50; Guide plate 60; Heat transfer
70; Humidity sensor 80; Replenishment water supply section
100; A terminal portion 101; Connection terminal
102; A power supply terminal 110; main body
111; Inlet inlet 112; Guide rail plate
120; Blower 130; Heat exchange pin
300; Storage tray 301; Support plate
391a; A through hole 310; Vaporization groove
320; An inclined plane 330; Vaporization member
331; A rotating shaft 332; Evaporation plate
333; A driving member 333a; Drive motor
333b; A rotating body 333c; Lower rotating body
333d; A rotational force transmitting member 340; temperature Senser
350; A heating member 360; Water level sensor
370; A humidity input unit 400; [0035]
410; A defrost water storage tank 420; Discharge line
610; Condenser 615; Heating tray
620; An open transfer line 630; The second opening / closing valve
640; A third open / close valve 650; Inflow line
810; Replenishment water storage tank 820; Supply line
830; A first opening / closing valve 910; Power supply

Claims

An evaporator (10) provided inside the low temperature reservoir to generate cold air; And a defrost heater for defrosting the evaporator (10), the system comprising:
A vaporizing unit 30 provided inside the evaporator 10 and storing evaporative water to be evaporated to fall in the heat exchanging fin 130 of the evaporator 10,
And a frost detection camera (20) provided at least one inside the evaporator (10) for taking a picture of a frozen state.

The method according to claim 1,
The frost detection camera (20) photographs the icing state of at least one of the heat exchanging fin (130) or the evaporator (300) provided in the evaporator (10) .

3. The method of claim 2,
And a controller (90) for comparing the iced state photographed by the frost detection camera (20) to determine an operation time point of the defrost heater and controlling driving of the defrost heater,
Characterized in that the frost detection camera (20) is a charge coupled device (CCD) camera comprising an illumination (25)
The frost detection camera 20 and the illumination 25 are driven by the control unit 90 on a predetermined time basis,
The frost detection camera 20 photographs the reflection amount of light reflected by the light emitted from the illumination unit 25,
Wherein the control unit (90) compares gray scale values through the reflection amount to determine a defrosting operation time point.

3. The method of claim 2,
The frost detection camera 20 is an infrared camera capable of detecting infrared radiation heat,
The frost detection camera 20 is driven by the control unit on a predetermined time basis,
Wherein the control unit (90) compares the infrared radiation heat detected by the frost detection camera (20) to determine a defrosting operation time point.

The method of claim 3,
And a transmitting unit for transmitting the image information of the frost detection camera 20 to the controller 90. The transmitting unit may be at least one of USB, UART, and TCP / IP,
Further comprising at least one state lamp (45) for outputting light according to the icing state, and the state lamp (45) is an LED light emitting diode.

The method according to claim 1,
The vaporization unit 30 includes a storage tray 300 in which evaporation water to be vaporized to fall in the heat exchange fin 130 of the evaporator 10 is stored therein and a groove 310 is formed in the lower side thereof;
And a vaporization member (330) provided in the groove (310) of the storage tray (300) to vaporize the purified water stored in the storage tray (300)
Wherein the vaporizing member (330) is made of an ultrasonic vibrator.

The method according to claim 1,
The evaporator 30 includes a storage tray 300 in which evaporative water to be evaporated to be dropped in the heat exchange fin 130 of the evaporator 10 is stored therein;
And a vaporization member (330) provided in the storage tray (300) for vaporizing the purified water stored in the storage tray (300)
The evaporation member 330 includes a rotation shaft 331 provided in the storage tray 300 and a plurality of evaporation plates 332 provided at predetermined intervals on the rotation shaft 331 and rotating in the forward and reverse directions along the rotation shaft 331, And a driving member (333) for rotating the rotating shaft (331).

8. The method according to claim 6 or 7,
An inlet / outlet 111 through which the vaporization unit 30 is introduced / withdrawn is formed below the evaporator 10,
A guide rail plate 112 is formed on one side of the inlet and outlet 111 and on the other side of the inlet and outlet 111 so as to guide the inlet and outlet of the vaporizing unit 30 so as to be positioned inside the evaporator 10 ,
A guide plate 50 for guiding the defrost water vaporized in the vaporizing unit 30 to the blowing fan 120 of the evaporator 10 is formed on one side of the vaporizing unit 30,
Further comprising a heating member (350) installed inside the vaporizing unit (30) to prevent the freezing of the stored gaseous water,
Wherein the heating member (350) is made of a heating coil.

The method according to claim 1,
The low temperature storage and defoaming system includes a humidity sensor (70) for sensing the humidity inside the low temperature reservoir,
A water level sensor 360 sensing the level of the defrost water stored in the evaporator 30,
A temperature sensor 340 for measuring the temperature of the defrost water stored in the evaporator,
A control unit 90 for controlling the vaporization unit 30 according to the detection signals of the sensors,
An alarm sound output unit 40 for outputting an alarm sound under the control of the control unit 90 according to a detection signal of the water level sensor 360,
The control unit 90 is provided with a humidity input unit 370 for inputting a reference humidity value in the low temperature storage,
The low-temperature, storage-stable defrost system is provided with a replenishment water supply unit (80) for supplying replenish water into the vaporization unit (30)
The replenishment water supply unit 80 includes a replenishment water storage tank 810 in which replenishment water to be supplied to the inside of the vaporization unit 30 is stored;
One end of which is connected to the lower portion of the makeup water storage tank 810 and the other end of which is located in the upper direction of the vaporization unit 30, the makeup water in the makeup water storage tank 810 is introduced into the vaporization unit 30 A supply line 820 for supplying;
And a first opening / closing valve 830 for opening / closing the supply line 820
And a heat transferring unit 60 for heating the makeup water of the makeup water supply unit 80 is provided,
The heat transfer unit (60) includes a condenser (610) for discharging condensation heat for heating the makeup water;
A heat transfer line 620 having one end connected to one side of the condenser 610 and the other end connected to a part of the makeup water supply unit to transfer condensation heat of the condenser;
And a second open / close valve 630 for controlling opening and closing of the hot transfer line 620,
And a defrost water storage unit 400 for storing defrost water discharged from the evaporator 30,
The defrost water storage 400 includes a defrost water storage tank 410 for storing defrost water discharged from the evaporator 30;
And a discharge line 420 formed between the defrost water storage tank 410 and the evaporator 30 and discharging the defrost water in the evaporator 30 to the defrost water storage tank 410 Characterized by low temperature storage defrost system.