JP2016223752A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve temperature increase as quickly as possible when a temperature of a switch room is switched from a low temperature side to a high temperature side.SOLUTION: Provided is a refrigerator 13 comprising a plurality of switch storage rooms 14, 15, and 16 each capable of switching a temperature of the storage room by a control to open or close a damper, configured such that when a set temperature of the switch storage room 14 is switched from a low temperature side to a high temperature side, a switch storage room damper 20 is closed and heating means 23 within the switch storage room is actuated, and the temperature of the switch storage room 14 can be increases as quickly as possible without heating the other storage rooms by heat of heating means 23 heating the switch storage room 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a refrigerator capable of switching the temperature of at least one storage room from a freezing temperature zone to a refrigeration temperature zone.

  Conventionally, refrigerators have a predetermined temperature range for each storage room, freezing rooms can only be adjusted within the freezing temperature range, and refrigerating rooms can only be controlled within the refrigerating temperature range. .

  However, in recent years, with the diversification of lifestyles, foods purchased by users have become diversified, and there has been an increasing need to change the storage volume of each temperature zone by switching the temperature zone of the storage room.

Therefore, refrigerators have been developed that can switch the temperature range of the storage room from the freezing temperature range to the refrigeration temperature range, or from the refrigeration temperature range to the freezing temperature range. (For example, see Patent Document 1)
Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 4 is a longitudinal sectional view for explaining a conventional refrigerator described in Patent Document 1. In FIG. FIG. 5 shows a front view around the switching room of a conventional refrigerator. 4 and 5, the refrigerator 1 includes a cooling system 4 including a compressor 2, a condenser (not shown), a decompression unit (not shown), and an evaporator 3, and can open and close the front opening. Refrigeration room 5, switching room 6, freezing room 7, and vegetable room 8 sealed with open doors 5 a, 6 a, 7 a and 8 a are provided.

  The evaporator 3 is housed in a cooling chamber 9 on the back surface of the freezer compartment 7 and includes a cooling fan 10 in the upper part, and circulates the cold air generated by the evaporator 3 in the refrigerator.

  The switching chamber 6 has a switching damper 11 for introducing and shutting off the cold air circulated by the cooling fan 10 in the switching chamber 6 and a heater 12 on the bottom surface for heating the switching chamber 6. To do.

  During the operation of the refrigerator 1, the cold air generated by the evaporator 3 is circulated in the cabinet by the cooling fan 10, and each storage chamber is maintained at a predetermined temperature.

  At this time, the switching damper 11 opens and closes in order to maintain the inside of the switching chamber 6 at the set temperature, and controls the blowing of cool air into the switching chamber 6.

  Here, when the switching chamber 6 is changed from the refrigeration setting to the refrigeration setting, the switching chamber 6 can be quickly brought into the refrigeration temperature zone by energizing the heater 12 and heating the inside of the switching chamber 6, and stored foods, etc. Can keep the quality.

Japanese Patent No. 3361038

However, in the above-described conventional configuration, when the switching damper is opened when the heater is energized, the heater heat flows to the other storage chamber via the damper and becomes a heat load, and the power consumption of the refrigerator There was a problem that the amount was high.

  Further, since the heater heats only the bottom wall and heats the switching chamber by natural convection, there is a problem that only the bottom surface is overheated and the center temperature is difficult to raise to the target temperature.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a storage chamber partitioned by a heat insulating wall, a cooling chamber in which a cooler is accommodated, a cooling fan that blows cool air from the cooling chamber to the storage chamber, and A plurality of switching storages, each having a plurality of storage chambers and dampers, each of which can be switched by controlling opening and closing of the dampers. In the refrigerator provided with a chamber, when the set temperature of the switching storage chamber is switched from the low temperature side to the high temperature side, the switching storage chamber damper is closed and the heating means in the switching storage chamber is operated. It is what.

  Thereby, the heat by a heater is interrupted | blocked by a damper, and another store room is not heated, but the increase in power consumption can be suppressed.

  Further, when the set temperature of the switching storage chamber is switched from the low temperature side to the high temperature side, the dampers other than the switching storage chamber are closed, the switching storage chamber damper is opened, and the heating means and the cooling fan are operated. The configuration is as follows.

  Thereby, the temperature of a switching chamber can be raised rapidly and deterioration of the freshness of a store thing can be prevented.

  Since the refrigerator of this invention can suppress the heat insulation performance degradation of a vacuum heat insulating material, it can improve the heat insulation performance of a refrigerator.

Vertical sectional view of a refrigerator according to Embodiments 1 and 2 of the present invention The flowchart explaining the refrigerator by Embodiment 1 of this invention The flowchart explaining the refrigerator by Embodiment 2 of this invention Vertical section of a conventional refrigerator Front view near the switching room of a conventional refrigerator

  The invention according to claim 1 includes a storage chamber partitioned by a heat insulating wall, a cooling chamber in which a cooler is accommodated, a cooling fan that blows cool air from the cooling chamber to the storage chamber, and the cooling chamber. A damper provided in a discharge air passage communicating with the storage chamber, and a plurality of switching units each having a plurality of the storage chambers and the dampers and capable of switching the temperature of the storage chambers by controlling the opening and closing of the dampers. In a refrigerator equipped with a storage room, when the set temperature of the switching storage room is switched from a low temperature side to a high temperature side, the switching storage room damper is closed and the heating means in the switching storage room is operated. In addition, it is possible to obtain a refrigerator with low power consumption without heating other storage chambers with the heat of the heater that raises the temperature of the switching chamber.

The invention according to claim 2 includes a storage chamber partitioned by a heat insulating wall, a cooling chamber in which a cooler is accommodated, a cooling fan that blows cool air from the cooling chamber to the storage chamber, and the cooling chamber. A damper provided in a discharge air passage communicating with the storage chamber, and a plurality of switching units each having a plurality of the storage chambers and the dampers and capable of switching the temperature of the storage chambers by controlling the opening and closing of the dampers. In the refrigerator having a storage room, when the set temperature of the switching storage room is switched from the low temperature side to the high temperature side, the dampers other than the switching storage room are closed, the switching storage room damper is opened, and heating means And the cooling fan is operated, the heat of the heater can be circulated in the switching chamber by the cooling fan, the temperature of the switching chamber can be quickly raised, and the freshness is high. It can be built warehouse.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a flowchart showing the operation of the refrigerator according to Embodiment 1 of the present invention.

  In FIG. 1, a refrigerator 13 includes a cooling system 4 including a compressor 2, a condenser (not shown), a decompression means (not shown), and an evaporator 3, and a door 5 a that can open and close an opening on the front surface. , 14a, 15a, 16a are provided with the refrigerator compartment 5, the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16.

  The evaporator 3 is housed in a cooling chamber 18 that is thermally insulated from the second switching chamber 15 by the heat insulating wall 17 on the back surface of the second switching chamber 15, and includes the cooling fan 10 in the upper portion. The cold air generated in the evaporator 3 is circulated in the cabinet.

  Further, in the refrigeration chamber, the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16, the refrigeration chamber damper 19 for introducing and shutting off the cold air circulated by the cooling fan 10 to each storage chamber, the first The first switching damper 20, the second switching damper 21, and the third switching damper 22 are provided, and the first heater 23, the second heater 24, and the third heater 25 are provided on the bottom surface. The second switching chamber 15 and the third switching chamber 16 are heated.

  Furthermore, in order to control the temperature of each storage room, each storage room is provided with a refrigerator compartment thermistor 26, a first thermistor 27, a second thermistor 28, and a third thermistor 29.

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

  During the operation of the refrigerator 13, the cold air generated by the evaporator 3 is circulated in the cabinet by the cooling fan 10, and each storage chamber is maintained at a predetermined temperature.

  At this time, the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16 are opened and closed by the first switching damper 20, the second switching damper 21, and the third switching damper 22, respectively. It is possible to maintain a refrigerated temperature zone around 5 degrees from the belt.

  Next, an operation when the set temperature of the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16 is switched to a temperature higher than the current temperature will be described based on the flowchart of FIG.

  Here, for the sake of simplicity, the description will be limited to the switching control of the first switching chamber 14, but the same operation is performed in any of the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16. Similar effects can be obtained.

  When the set temperature of the first switching chamber 14 is switched to a temperature higher than the current temperature, the control unit (not shown) first closes the first switching damper 20 and energizes the first heater 23 to perform the first switching. The inside of the chamber 14 is heated.

  When the temperature detected by the first thermistor 27 exceeds a certain value T1, the power supply to the first heater 23 is cut off.

  As a result, the temperature of the first switching chamber 14 can be quickly raised to the target temperature by the first heater 23, and the first switching damper 20 is closed. Warm warm air does not flow to other storage rooms, and the heat load of the refrigerator 13 does not increase.

  In the present embodiment, T1 varies depending on the outside air temperature, the set temperature of the other storage room, and the like. For example, the higher the outside air temperature and the set temperature of the other storage room, the lower the value. can do.

  Moreover, in this Embodiment, although the evaporator 3 was made into the 2nd switching chamber 15 back surface, the position of the evaporator 3 may be in any storage chamber. Moreover, by accommodating in one storage chamber, there exists a merit that a duct is simplified and a storage internal volume can be enlarged.

  Further, in the present embodiment, the switching chambers are the first to third chambers, but it goes without saying that the same effect can be obtained if there are one or more chambers.

  In the present embodiment, the first heater 23, the second heater 24, and the third heater 25 have been described as configurations provided on the bottom surfaces of the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16. By adding to the side wall surface, top surface, etc., the rate of temperature rise increases, but there is a demerit that the amount of power consumption increases.

  Further, in the present embodiment, by providing the second heater 24 on the surface of the heat insulating wall 17, when the second switching chamber 15 is set to be refrigerated, the inside of the second switching chamber 15 is moved from the cooling chamber 18 through the heat insulating wall 17. Since the cooling can be suppressed by the second heater 24, the thickness of the heat insulating wall 17 can be reduced, and the storage volume of the second switching chamber 15 can be increased.

(Embodiment 2)
FIG. 3 is a flowchart showing the operation of the refrigerator according to the second embodiment of the present invention.

  The operation when the set temperature of the switching chambers 14, 15, 16 is switched to a temperature higher than the current temperature will be described based on the flowchart of FIG.

  Here, for the sake of simplicity, the description will be limited to the switching control of the first switching chamber 14, but the same operation is performed in any of the first switching chamber 14, the second switching chamber 15, and the third switching chamber 16. Similar effects can be obtained.

  When the set temperature of the first switching chamber 14 is switched to a temperature higher than the current temperature, the control unit (not shown) first closes the refrigerator compartment damper 19, the second switching damper 21, and the third switching damper 22, The switching damper 20 is opened, the first heater 23 is energized, and the cooling fan 10 is operated.

  When the temperature detected by the first thermistor 27 exceeds a certain value T1, the power supply to the first heater 23 is cut off.

Thus, the temperature of the first switching chamber 14 can be raised to the target temperature earlier by the first heater 23, and the refrigerator compartment damper 19, the second switching damper 21, and the third switching damper 22 are closed. Thus, the warm warm air in the first switching chamber 14 does not flow to other storage chambers, and the heat load on the refrigerator 13 does not increase.

  In addition, Embodiment 1 and Embodiment 2 can also be performed according to cases depending on the operation state of the compressor 2. That is, when the compressor 2 is in operation (the evaporator 3 is cooling), the operation of the first embodiment is performed, and when the compressor 2 is stopped (the evaporator 3 is not cooled), the operation is performed. By performing the operation of the second mode, the temperature of the first switching chamber 14 can be increased more efficiently.

  Furthermore, you may raise the temperature of the 1st switching chamber 14 using the defrost heater (not shown) arrange | positioned in the evaporator 3 vicinity.

  In the refrigerator of the present invention, when the temperature of the storage room is switched from low temperature to high temperature, the temperature can be quickly raised without increasing the heat load of the other storage room, so that the temperature of the storage room can be switched. Applicable to all devices.

DESCRIPTION OF SYMBOLS 3 Evaporator 10 Cooling fan 13 Refrigerator 14 1st switching chamber 14a, 15a, 16a Door 15 2nd switching chamber 16 3rd switching chamber 17 Thermal insulation wall 18 Cooling chamber 19 Refrigeration chamber damper 20 1st switching damper 21 2nd switching damper 22 Third switching damper 23 First heater 24 Second heater 25 Third heater 26 Cold room thermistor 27 First thermistor 28 Second thermistor 29 Third thermistor

Claims (2)

A storage chamber partitioned by a heat insulating wall, a cooling chamber in which a cooler is accommodated, a cooling fan for blowing cool air from the cooling chamber to the storage chamber, and a discharge air passage communicating from the cooling chamber to the storage chamber In the refrigerator having a plurality of switching storage chambers, each having a plurality of the storage chambers and the dampers, each of which can switch the temperature of the storage chambers by opening and closing control of the dampers, When the set temperature of the switching storage chamber is switched from the low temperature side to the high temperature side, the damper for the switching storage chamber is closed and the heating means in the switching storage chamber is operated. A storage chamber partitioned by a heat insulating wall, a cooling chamber in which a cooler is accommodated, a cooling fan for blowing cool air from the cooling chamber to the storage chamber, and a discharge air passage communicating from the cooling chamber to the storage chamber In the refrigerator having a plurality of switching storage chambers, each having a plurality of the storage chambers and the dampers, each of which can switch the temperature of the storage chambers by opening and closing control of the dampers, When the set temperature of the switching storage chamber is switched from the low temperature side to the high temperature side, the dampers other than the switching storage chamber are closed, the damper for the switching storage chamber is opened, and the heating means and the cooling fan are operated. Features a refrigerator.

Images