JP5262244B2 - refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator installed with a program for calculating the temperature of an ice making compartment from the temperature of other freezing compartment to determine completion of ice making. <P>SOLUTION: The refrigerator is provided with a refrigerating compartment 10 maintained in a refrigerating temperature zone; the ice making compartment 20 and freezing compartment 50 partitioned and formed individually; an ice making compartment door 23; a freezing compartment door 52; an air blower 100 for sending cold air cooled by an evaporator to each storage compartment; a freezing compartment temperature detection sensor 51 for detecting the temperature of the freezing compartment 50; an ice making device 21; and a control device 60 for controlling a cooling system such as the ice making device 21 and the air blower 100 as well as a compressor connected to the evaporator. Based on the detection value by the freezing compartment temperature detection sensor 51, the control device 60 calculates the temperature of the ice making compartment 20 to determine the completion of ice making. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an ice making device including an ice tray and a refrigerator including this device.

  In recent years, commercialization of refrigerators with improved hygienic conditions in the warehouse has been demanded, and as part of this, ice making devices that can be removed from ice trays and washed by hand have been commercialized (see, for example, Patent Document 1).

  Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 15 is a front view of the conventional refrigerator with the door removed. In FIG. 15, reference numeral 1 denotes a refrigerator-freezer of the present invention, a refrigerator room 2 controlled to about 3 ° C., a vegetable room 3 controlled to about 5 ° C., and an ice making room (freezer room) 4 controlled to about −20 ° C. A switching chamber 5 that is switched to a freezing chamber or an ice making chamber and a freezing chamber 6 that is controlled at about −20 ° C. are formed. A partition shelf 7 is arranged in the refrigerator compartment 2, an ice greenhouse 8 whose temperature is controlled to −1 ° C. is formed on the lower right side of the refrigerator compartment 2, and a water supply tank 9 is arranged on the lower left side. ing.

  In the vegetable room 3, the switching room 5, and the freezing room 6, a vegetable room container 10, a switching room container 11, and a freezing room container 12 are arranged. Further, the ice making chamber 4 is provided with an ice tray 13 and an ice box 14 for storing ice from the ice tray. Reference numeral 15 denotes a water supply pipe for guiding water from the water supply tank 9 to the ice tray.

  FIG. 16 is a block diagram showing the control device. A control device 21 is used as a defrost heater 22 for the refrigerator for the refrigerator compartment, a defrost heater 23 for the evaporator for the freezer compartment, a fan 24 for the refrigerator compartment, a fan 25 for the freezer compartment, and a drive unit for the automatic ice making device. Controls a drive motor (deicing mechanism) 26, a water supply pump 27 used in a water supply device, a refrigerant compressor 28, and the like, and is composed of, for example, a microcomputer and is installed on the back of a refrigerator-freezer Arranged on the substrate (not shown). Reference numeral 29 denotes a freezer compartment temperature detection sensor which is attached to the freezer compartment 4 and detects the temperature of the freezer compartment 4.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

In the ice making device, a correlation between the detected temperature of the ice tray 13, the detected temperature of the freezer temperature detecting sensor 29 and the accumulated operation time of the blower 24 is obtained in advance, and the control device 21 is set to the accumulated operation time of the blower. The temperature of the ice tray 13 is estimated from the correlation with the temperature detected by the temperature sensor 29 for the freezer, and the ice tray 13 is determined to be complete based on the estimated temperature of the ice tray 13. It is possible to determine the completion of ice making in the ice making tray 13 without the need for a sensor for detecting the temperature of the ice making apparatus, and the ice making device can be made inexpensive.
JP 2003-130519 A

  However, in the above-described conventional configuration, it is not necessary to attach a temperature detection sensor to the ice tray 13, but since the temperature detection sensor is required in the ice making chamber 4, only the installation location is changed, and the cost reduction effect is achieved. Had the problem of becoming limited.

  Further, the temperature of the ice tray 13 is estimated from the correlation between the accumulated operation time of the blower 24 and the freezer temperature detection sensor 29, and the completion of ice making is judged, and the latent heat change state and the sensible heat change state coexist. In the process of making ice, it is difficult to correctly estimate the temperature of the ice tray, and there is a problem that it is easy to misrecognize the determination of completion of ice making.

In order to solve the above-described conventional problems, the refrigerator of the present invention is provided in a refrigerating room kept in a refrigerating temperature zone, an ice making room and a freezing room each independently formed, and disposed in front of the ice making room. A freezer compartment door, a freezer compartment door disposed in front of the freezer compartment, a blower for sending cool air cooled by an evaporator to each storage compartment, and a freezer compartment temperature detecting the temperature of the freezer compartment A detection sensor; an ice making device installed in the ice making chamber; and a control device for controlling a refrigerant compressor or the like connected to the evaporator in addition to the ice making device and the blower. The completion of ice making is determined based on the detection value of the freezer temperature sensor. This eliminates the need for a temperature sensor in the ice tray or ice chamber.

  Further, the control device obtains from the temperature difference between the ice making room temperature based on the temperature detected by the freezer temperature detecting sensor and the temperature inside the ice making tray in a state of changing the latent heat, and the operating state of the blower. An ice making program for calculating the ice making total heat quantity from the ice making chamber air flow and determining completion of ice making based on the ice making total heat quantity is provided.

  The refrigerator of the present invention can determine the completion of ice making with the freezer temperature sensor in consideration of the actual ice making process, and can determine the completion of ice making with a simple program without the ice chamber temperature sensor. Become.

The invention according to claim 1 is provided in a refrigerating room kept in a refrigeration temperature zone, a freezing room kept in a freezing temperature zone, an ice making compartment configured in the freezing compartment, and a front surface of the ice making compartment An ice making compartment door, a freezing compartment configured in the freezing compartment, a freezing compartment door arranged in front of the freezing compartment, and a blower for sending cold air cooled by an evaporator to each storage compartment A refrigerating compartment temperature detecting sensor for detecting the temperature of the freezing compartment, an ice making device installed in the ice making compartment, and a cooling system such as a refrigerant compressor connected to the evaporator in addition to the ice making device and the blower. The refrigeration compartment temperature detection sensor is installed at a place where the return air temperature to the evaporator is detected in the air passage in the refrigeration compartment, and the control device is the refrigeration compartment temperature detection sensor. calculates the detected temperature based on And ice making compartment temperature which calculates the ice making total heat from the temperature difference between the ice tray inside temperature of the latent heat change state to a predetermined, the ice making compartment blowing amount obtained from the operating state of the fan, the ice making total heat By having an ice making program for determining completion of ice making based on this, a temperature detection sensor is not required in the ice making section.

Further, according to the present invention, the ice making program includes a temperature difference between an ice making compartment temperature calculated based on a temperature detected by the freezing compartment temperature detecting sensor and an ice making tray internal temperature in a predetermined latent heat change state, a blower The total ice-making heat quantity is calculated from the ice-making compartment air flow rate obtained from the operating state, and the completion of ice-making is judged based on the total ice-making heat quantity, and the completion of ice making can be judged with high accuracy with a simple program.

According to a second aspect of the present invention, when the cooling system is stopped, the ice making program adds a correction value predetermined by the stop time to the detected temperature of the refrigeration compartment temperature detecting sensor. Is the ice making compartment temperature, and the accuracy of the ice making completion judgment can be improved.

In the invention according to claim 3 , when only the blower is stopped during the cooling system operation, a correction value determined in advance by the time when the blower is stopped is added to the detection temperature of the freezing compartment temperature detection sensor, By making this the ice making compartment temperature, the accuracy of the ice making completion determination can be improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted.

  The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view showing a state in which the door of the refrigerator in Embodiment 1 of the present invention is removed. FIG. 2 is a block diagram showing the control device according to Embodiment 1 of the present invention. FIG. 3 is a flowchart showing the operation in the first embodiment of the present invention. FIG. 4 is a temperature characteristic diagram of each part in the first embodiment of the present invention. FIG. 5 is a cross-sectional view in the lateral direction of the ice making chamber according to Embodiment 1 of the present invention. FIG. 6 is a cross-sectional view in the lateral direction of the refrigerator in the first embodiment of the present invention. FIG. 7 is a temperature characteristic diagram of each part when the cooling system is stopped in the first embodiment of the present invention. FIG. 8 is a temperature characteristic diagram showing the relationship between the temperature difference between the ice making room room temperature and the freezer room sensor temperature when the refrigerating room door is opened, and the refrigerating room door opening time in Embodiment 1 of the present invention. FIG. 9 is a temperature characteristic diagram showing the relationship between the temperature difference between the ice making room temperature and the freezing room sensor temperature when the ice making room door is opened and the opening time of the ice making room door in Embodiment 1 of the present invention. FIG. 10 is a temperature characteristic diagram showing the relationship between the temperature difference between the ice making room room temperature and the freezer room sensor temperature when the ice making room door is opened in Embodiment 1 of the present invention, and the ambient temperature of the refrigerator. FIG. 11 is a temperature characteristic diagram showing the relationship between the ice making room temperature and the freezing room sensor temperature when a load is applied to the freezing room in Embodiment 1 of the present invention.

  In FIG. 1, the refrigerator main body 1 is divided into a refrigerator compartment 10, an ice making compartment 20, a switching compartment 30, a vegetable compartment 40, and a freezer compartment 50 in order from the top.

  In the refrigerator according to the present embodiment, the refrigerator compartment 10 and the freezer compartment 50 can each select a room temperature in three stages, and the switching chamber 30 can switch between the refrigerator temperature and the refrigerator temperature.

  A refrigerating room temperature detection sensor 11 is disposed in the refrigerating room 10 to control the room temperature of the refrigerating room 10. The refrigerating room 10 includes a revolving refrigerating room door (not shown), and a door switch 12 for detecting the open / closed state of the refrigerating room door is provided.

  An ice making device 21 is disposed in the ice making chamber 20, and water supplied from the water supply tank 13 is stored in an ice making tray 22 for ice making. The ice making chamber 20 includes a drawer type ice making chamber door 23, and a door switch 24 for detecting the open / closed state of the ice making chamber door 23 is disposed.

  A switching chamber temperature detection sensor 31 is attached in the switching chamber 30 to control the room temperature of the switching chamber 30. The switching chamber 30 is provided with a drawer-type switching chamber door (not shown).

  The vegetable room 40 has a drawer-type vegetable room door (not shown). A freezer temperature sensor 51 is attached in the freezer compartment 50 to control the room temperature of the freezer compartment 50. The freezer compartment 50 is provided with a drawer-type freezer compartment door 52, and a door switch 53 for detecting the open / close state of the freezer compartment door 52 is provided.

  In FIG. 2, a control device 60 controls a compressor 70, a water supply pump 80 used in the water supply device, a drive motor 90 used as a drive device for the ice making device 21, a blower 100, and the like. It is comprised from the etc., and is arrange | positioned at the electrical equipment board | substrate arrange | positioned at the back surface of the refrigerator main body 1 (not shown). The outside temperature detection sensor 110 is a temperature sensor that detects the ambient temperature of the refrigerator.

  Although a compressor circuit, a condenser, a pressure reducing device, and an evaporator are connected in a tubular form with a refrigerant pipe in order, a refrigerant circuit is configured, but this is not shown.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In FIG. 3, first, an ice making program which is a calculation function of the control device 60 selects a basic ice making time determined in advance by the outside air temperature and the temperature control setting of each storage room.

  This basic ice making time is the time from the start of water supply to the de-icing.

  Next, when the basic ice making time selected after the water supply has passed, it is determined whether or not the ice making time needs to be extended based on the door open / close state of each storage room and the room temperature.

  That is, when a load change occurs during the basic ice making time, the ice making time is extended in advance depending on the door opening time or the room temperature rise.

  Finally, when the ice making chamber temperature t1 becomes −10 ° C. or lower, it is determined that ice making is completed and ice removal is performed.

  In the present embodiment, the ice making program recognizes that the ice making room temperature t1 is the temperature detected by the freezer temperature sensor 51.

  In FIG. 4, it is clear that the freezer compartment temperature detection sensor 51 and the ice making room temperature t <b> 1 have synchronized characteristics although they show a certain divergence. It is possible to estimate the ice making temperature t1 from the detected temperature.

  5 and 6, in the present embodiment, as a condition indicating the temperature characteristic of FIG. 4, the ice making chamber temperature t1 is the temperature after the cold air discharged to the ice making chamber 20 passes through the vicinity of the ice making tray 22. On the other hand, the freezer compartment temperature detection sensor 51 is installed in a place for detecting the return air temperature to the evaporator in the air passage in the freezer compartment 50.

  As described above, the ice making temperature t1 is estimated based on the temperature detected by the freezer temperature detection sensor 51 to determine completion of ice making. However, the detected temperature of the freezer temperature detecting sensor 51 described above and the ice making are determined according to the operation state of the refrigerator. The temperature t1 may deviate, so that correction needs to be made depending on operating conditions.

  In FIG. 7, when the operation of the cooling system is stopped, that is, in a state where both the compressor 70 and the blower 100 are stopped, the ice making room temperature t1 rises with a difference from the temperature detected by the freezer temperature detecting sensor 51. This is because the ice making chamber 20 is located above the freezer compartment 50 in the layout of the present embodiment, and is due to the influence of the natural temperature distribution in the cabinet when the cooling system is stopped. It can be seen that the dissociation temperature tends to increase with increasing.

  Therefore, while the cooling system is stopped, the deviance temperature K1 is obtained by Equation 1 as a function of the elapsed time since the stop, and the ice making chamber temperature t1 is corrected by Equation 2 (Equation 2).

  In FIG. 8, when the door 12 of the refrigerator compartment 10 is opened during the operation of the cooling system and the door switch 13 detects this, the compressor 70 continues to operate but the blower 100 stops. In this state, due to the influence of the natural temperature distribution in the refrigerator, the ice making room room temperature t1 rises with a deviation from the temperature detected by the freezer temperature detecting sensor 51.

  In addition to this, since the compressor 70 is in operation, it has become clear that the temperature of the evaporator decreases and the temperature of the freezer compartment temperature detection sensor 51 decreases under the influence of the temperature.

  As described above, it can be seen that the divergence due to the two factors is proportional to the opening time of the door 12.

  Therefore, when the door 12 is opened during the operation of the cooling system, the ice making chamber temperature t1 is corrected by obtaining the deviation temperature K2 as a function of the elapsed time since opening (Formula 4).

  9 and 10, when the door 23 of the ice making chamber 20 is opened and the door switch 24 detects this, the compressor 70 continues to operate but the blower 100 stops. In this state, as the surrounding air flows into the ice making chamber 20, the ice making chamber temperature t1 deviates from the freezer compartment temperature detection sensor 51 and rapidly increases.

  Here, when the ambient temperature is constant, it is clear that the ice making chamber temperature t1 and the temperature detected by the freezer compartment temperature detection sensor 51 deviate while the door 23 is open, and this deviation is proportional to the elapsed time. .

  In addition, when the ambient temperature changes, the deviation value also varies depending on the ambient temperature. That is, if the ambient temperature is high, the deviation value after a certain time increases, and conversely, if the ambient temperature is low, the deviation value decreases.

  Therefore, when the door 23 is opened, the deviance temperature K3 is obtained by Equation 5 as a function of the elapsed time from the opening and the ambient temperature, and the ice making chamber temperature t1 is corrected (Equation 6).

  In FIG. 11, when the door 52 of the freezer compartment 50 is opened and ambient air flows in or when food is introduced, the temperature detected by the freezer compartment temperature detection sensor 51 shows a rapid temperature rise. t1 does not change greatly due to the influence of the cold air once cooled by the evaporator, and deviates from the ice making chamber temperature t1 in the direction in which the temperature detected by the freezer temperature detection sensor 51 increases.

  Therefore, a predetermined constant corresponding to the increase in the detected temperature of the freezer compartment temperature detection sensor 51 after a predetermined time after the door switch 53 detects that the door 23 has been closed. The difference was corrected by subtracting the minutes (Equation 7).

  As described above, in the ice making room 20 and the freezing room 50 that are individually defined, the ice making program of the present embodiment sets a predetermined basic ice making time by setting the outside air temperature and the temperature control of each storage room. Since the selection was made and the completion of ice making was judged by adding the extension of ice making time depending on the door opening / closing situation of each storage room and the room temperature condition, simple and relatively high-precision control could be realized.

  Further, in the ice making chamber 20 and the freezer compartment 50 each independently formed, the ice making program of the present embodiment calculates the ice making chamber temperature t1 based on the temperature detected by the freezer temperature detecting sensor 51, and ice making. Since the completion is determined, it is not necessary to separately install the temperature detection sensor 51 in the ice making chamber 20, and the cost can be reduced.

  Furthermore, since the ice making program of the present embodiment calculates the ice making chamber temperature t1 by correcting the temperature detected by the freezer temperature detecting sensor 51 while the cooling system is stopped, the accuracy of ice making completion control is improved. Can do.

  Furthermore, since the ice making program of the present embodiment calculates the ice making chamber temperature t1 by correcting the temperature detected by the freezer temperature detecting sensor 51 while the blower 100 is stopped, the accuracy of ice making completion control is improved. be able to.

  Furthermore, when the door 23 of the ice making chamber 20 is opened, the ice making program of the present embodiment calculates the ice making chamber temperature t1 by correcting the detection temperature of the freezer temperature detecting sensor 51 based on the opening time and the ambient temperature. Therefore, the accuracy of ice making completion control can be improved.

  Furthermore, since the ice making program according to the present embodiment calculates the ice making room temperature t1 by correcting the temperature detected by the freezing room temperature detection sensor 51 in response to the case where food is put into the freezing room 50. The accuracy of ice making completion control can be improved.

(Embodiment 2)
FIG. 12 is a front view showing a state where the door of the refrigerator in Embodiment 2 of the present invention is removed. FIG. 13 is a flowchart showing the operation of the refrigerator in the second embodiment of the present invention. FIG. 14 is a temperature characteristic diagram of each part according to the second embodiment of the present invention.

  12 and 13, the refrigerator main body 1 is divided into a refrigerator compartment 10, a freezer compartment 120, and a vegetable compartment 130 in order from the top.

  The freezer compartment 120 includes an ice making section 140, a first freezing section 150, and a second freezing section 160 in order from the top.

  Furthermore, an ice making compartment door 141 and a second freezing compartment door 161 which are drawer type doors are configured in each compartment.

  An ice making device 142 is attached in the ice making section 140, and the water supplied from the water supply tank 13 is stored in an ice making tray 143 for ice making. A door switch 144 for detecting the open / close state of the ice making compartment door 141 is provided.

  A freezing compartment temperature detection sensor 162 is attached to the second freezing compartment 160 to control the room temperature of the second freezing compartment 160. A door switch 163 for detecting the open / close state of the second freezing compartment door 161 is provided.

  Here, the blower 200 of the present embodiment has a configuration in which the number of rotations can be switched stepwise by the output from the control device 60. At this time, the rotation speed of the blower 200 is automatically adjusted by the ambient temperature, the temperature adjustment setting, and the internal temperature.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In FIG. 14, when water is supplied to the ice tray 143, the temperature in the ice tray 143 rises rapidly. Thereafter, the temperature of the ice tray 143 is stabilized at about −3 ° C. while the supplied water is in the latent heat change state, and then the temperature of the ice tray 143 rapidly decreases when the supplied water is completely frozen.

  Here, the ice making chamber temperature t1 changes depending on the use conditions and operating conditions of the refrigerator, so that the time until ice making is completed changes, but the amount of heat required for ice making per change does not change so far. It became clear by experiment.

  In the ice making program of the present embodiment, the amount of heat is obtained by Equation 5. This is the result of integrating the value obtained by multiplying the temperature difference between the temperature (−3 ° C.) of the ice tray 143 during the change of latent heat and the ice making compartment temperature t2 by the air flow coefficient g, and when this value reaches a predetermined value, It was decided to complete.

  Here, the air flow coefficient g is obtained by correcting the operating state of the blower 100 under a predetermined operating condition as 1, and correcting the increase / decrease of the air flow as a coefficient according to the operating state of the blower 100.

  As described above, the temperature t1 of the ice making chamber is estimated based on the temperature detected by the freezer temperature detection sensor 162, and the completion of ice making is determined. However, the detected temperature of the freezer temperature detecting sensor 162 described above depends on the operating condition of the refrigerator. The ice making temperature t1 may deviate, and the same correction as in the first embodiment is applied also in the present embodiment.

  As described above, in the refrigerator in which the ice making section 140 and the second freezing section 160 are configured in the freezer compartment 120 and each has its own door, the ice making program of the present embodiment performs the freezing section temperature detection. Since the ice making chamber temperature t2 is calculated based on the detected temperature of the sensor 162 and it is determined that ice making is completed, it is not necessary to install a separate temperature detecting sensor in the ice making section 140, and the cost can be reduced.

  Further, by integrating the value obtained by multiplying the temperature difference between the ice tray 143 during the change of latent heat (−3 ° C.) and the ice making compartment temperature t2 by the air flow coefficient g, the ice making is completed when this value becomes a predetermined value. As a result, concise and accurate control was achieved.

  The freezing compartment temperature detection sensor 162 is located below the freezing compartment 160 and is arranged to detect the temperature of the return cold air from the freezing compartment 120. However, the ice making compartment 140, the first freezing compartment 150, etc. Even if it is disposed above 120, the ice making program can be applied by reviewing the correlation between the ice making compartment temperature t1 and the freezing compartment temperature detection sensor 162.

  As described above, the refrigerator according to the present invention can be applied to a commercial refrigerator because it can control the completion of ice making by calculating the temperature of the ice making chamber with a temperature detection sensor installed in the freezer.

The front view of the state which removed the door of Embodiment 1 of the refrigerator by this invention The block diagram which shows the control apparatus of Embodiment 1 of the refrigerator by this invention. Flowchart of Embodiment 1 of the refrigerator according to the present invention Temperature characteristic diagram of each part of the first embodiment of the refrigerator according to the present invention Sectional drawing of the horizontal direction of the ice making chamber of Embodiment 1 of the refrigerator by this invention Sectional drawing of Embodiment 1 of the refrigerator by this invention Temperature characteristic diagram of each part at the time of cooling system stop of Embodiment 1 of the refrigerator according to the present invention Temperature characteristic diagram showing the relationship between the temperature difference between the ice making room temperature and the freezer sensor temperature when the refrigerator door of the refrigerator according to the first embodiment of the present invention is opened, and the opening time of the refrigerator door The temperature characteristic figure which shows the relationship between the deviation temperature of the ice-making room room temperature at the time of ice-making room door opening of the refrigerator of Embodiment 1 of this invention, and freezer compartment sensor temperature, and the opening time of an ice-making room door The temperature characteristic figure which shows the relationship between the deviation temperature of the ice-making room room temperature at the time of opening of the ice-making room door of the refrigerator of Embodiment 1 of this invention, and freezer room sensor temperature, and the ambient temperature of a refrigerator Temperature characteristic diagram showing the relationship between the ice making room temperature and the freezing room sensor temperature when a load is applied to the freezing room in the first embodiment of the refrigerator according to the present invention The front view of the state which removed the door of Embodiment 2 of the refrigerator by this invention The flowchart which shows operation | movement of the refrigerator of Embodiment 2 by this invention. Temperature characteristic diagram of each part according to the second embodiment of the present invention Front view of a conventional refrigerator with the door removed Block diagram showing a conventional control device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Refrigeration room 20 Ice making room 21 Ice making apparatus 22 Ice making tray 23 Ice making room door 50 Freezing room 51 Freezing room temperature detection sensor 52 Freezing room door 60 Control apparatus 120 Freezing room 140 Ice making compartment 141 Ice making compartment door 160 Second freezing compartment 161 Second Refrigeration compartment door

Claims (3)

A refrigerating room kept in a refrigerated temperature zone; a freezing room kept in a freezing temperature zone; an ice making compartment configured in the freezing compartment; an ice making compartment door disposed in front of the ice making compartment; and the freezing compartment A refrigeration compartment configured indoors, a refrigeration compartment door disposed in front of the refrigeration compartment, a blower for sending cold air cooled by an evaporator to each storage compartment, and detecting the temperature of the refrigeration compartment consists of a freezing compartment temperature sensor, and an ice making device which is provided inside the ice making compartment, and a control device for controlling the refrigerant compressor such as a cooling system which is connected to the evaporator in addition to the ice-making device and the blower, wherein The refrigeration compartment temperature detection sensor is installed in a place where the return air temperature to the evaporator is detected in the air passage in the refrigeration compartment, and the control device is calculated based on the detection temperature of the refrigeration compartment temperature detection sensor . Ice making compartment temperature and And the temperature difference between the ice tray inside temperature beforehand defined latent heat change state, calculates the ice making total heat from the ice making compartment blowing amount obtained from the operating state of the fan, determined ice complete based on the ice making total heat A refrigerator characterized by having an ice making program. The ice making program, when the cooling system is stopped, adds a correction value determined in advance by a stop time to the detection temperature of the freezing compartment temperature detection sensor, and sets this as the ice making compartment temperature. The refrigerator according to claim 1 . When only the blower is stopped during the cooling system operation, the ice making program adds a correction value determined in advance by the time when the blower is stopped to the detection temperature of the freezing compartment temperature detection sensor, and this is added to the ice making compartment. the refrigerator according to claim 1, characterized in that the temperature.