JP4867758B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator having a refrigerating room cooled by a direct cooling method and a freezing room cooled by an indirect cooling method.

  Conventionally, this type of refrigerator has a refrigeration cycle in which refrigerant discharged from a compressor passes through a condenser, a three-way valve, a decompressor, and an evaporator and returns to the compressor again, and is cooled by the evaporator. There are a direct cooling type that cools the inside of the box by the above, and an indirect cooling type that cools the inside of the box by circulating the cool air cooled by the evaporator into the box (for example, see Patent Document 1).

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

FIG. 11 is a schematic cross-sectional view of a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 11, in the conventional refrigerator, a refrigeration zone 122 and a freezing zone 123 are vertically partitioned by a partition plate 121 having a heat insulating effect, and the inside of the refrigeration zone 122 is further partitioned by a partition plate 124 by a partition plate 124. And the vegetable compartment 124a are vertically partitioned. In the freezing zone 123, the first freezer compartment 126 and the second freezer compartment 127 are partitioned by a partition plate 125, respectively. And the cooling pipe 128 is arrange | positioned at the inner case 5 wall surface of the refrigerator compartment 21, and it has the structure provided with the evaporator 53 and the freezer compartment fan 52 in the freezing zone 123 back surface.
JP 2000-028257 A

  However, the above conventional configuration improves the refrigeration capacity when rapid cooling is required at high loads, such as when the number of times the refrigeration room door is opened and closed in high outside air and high humidity, or when a large amount of stored food is introduced. Therefore, the evaporating temperature of the refrigerator compartment must be lowered, and since the fan for circulating the refrigerator compartment is adopted, the amount of frost formation on the evaporator or cooling wall in the refrigerator compartment is increased, and the refrigerating capacity of the evaporator or cooling wall is increased. Will soon drop. Further, in order to return the refrigeration capacity, it is necessary to perform defrosting, and it is necessary to frequently stop cooling of the refrigerator compartment. Therefore, in order to quickly cool the food in the refrigerator compartment when the refrigerator compartment is under heavy load, when more freezing capacity is required, the refrigeration capacity deteriorates due to frost formation, frequent cooling stops for defrosting, It had the subject that the refrigerating capacity of an evaporator or a cooling wall surface could not be fully demonstrated.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide a refrigerator that is easy to use while allowing rapid cooling of the interior and also suppressing drying of food.

In order to solve the above-described conventional problems, in claim 1 of the present invention, a refrigeration room cooled by a direct cooling type refrigeration room evaporator, a freezing room cooled by an indirect cooling type , and communicating air passage which communicates the freezing chamber or the freezing chamber cooling air passage and the refrigerating chamber, a refrigerating chamber air passage for discharging cold air from the communication air passage to the cooling chamber, the opening and closing damper to the communication air passage A refrigerator in which the refrigerator compartment is disposed on a back surface of the refrigerator compartment, and the refrigerator compartment air passage is disposed so as to avoid the refrigerator compartment evaporator. In doing so, the open / close damper is opened in the communication air passage, and the cold air in the freezer compartment or the freezer compartment air passage is blown into the refrigerator compartment .

  As a result, the open / close damper is opened at the time of high loads such as a large number of opening and closing of the refrigerator compartment door in high outside air and high humidity and a large amount of stored food is thrown in, and cool air from the freezer compartment or the freezer compartment cooling evaporator is opened. The inside of the refrigerator compartment can be rapidly cooled from both the cooling wall configured based on the evaporator of the refrigerator compartment and the cold air of the freezer compartment or the evaporator for cooling the freezer compartment. Moreover, if the internal temperature is stabilized within a predetermined temperature, the open / close damper is closed to cool only the cooling wall surface of the refrigerator compartment, and drying of food can be suppressed.

Also, during defrosting of the cooling wall surface of the refrigerated chamber, it performs control for blowing cold air of the freezing chamber or the freezing chamber cooling evaporator to the refrigerator compartment.

Thus, even if there is no cooling in the cooling wall surface of the cooling wall in the defrosting of the cooling wall surface of the refrigerated chamber i.e. the refrigerating compartment, by blowing cold air of the freezing chamber or the freezing chamber cooling evaporator to the refrigerating chamber, The cooling of the refrigerator compartment can be maintained and continued.

The heat In the second aspect of the present invention, from the cooling wall is constituted by an evaporator and the inner box refrigerated chamber, which separates the evaporator from the inner box of the refrigerating compartment, pasting cooling pipes on the back A decorative board with good conductivity (for example, an aluminum plate) is installed as a refrigerator in the refrigerator compartment.

Thus, since the thickness of the thermal resistance of i.e. inner box of refrigerated room box is decreased correspondingly as the insulation resistance and cooling area is enlarged, it is possible cooling efficiency is improved.

Further, in the third aspect of the present invention, the top surface of the refrigerated chamber provided discharge air passage and a discharge port, and said it no refrigerating tied room plurality air passage and the refrigerating chamber ceiling discharge air path structure Is.

Thus, shea showers can be cooled in a manner, it is possible to reduce the temperature distribution more refrigeration compartment, the food can also be cooled uniformly disposed in any position.

Further, in the fourth aspect of the present invention is provided with a cold room agitation fan in refrigerated room.

This allows stirring the atmosphere of the refrigeration compartment by rotating the refrigerated compartment stirring fan, it is possible reduce the temperature distribution more refrigeration compartment.

Further, in the fifth aspect of the present invention, the evaporator and the freezing compartment evaporator refrigerated chamber in parallel, and a cooling circuit having a double door can be three-way valve upstream of the evaporator, the evaporator The refrigerant flow is controlled.

Accordingly, it becomes unnecessary to stop the cooling of the refrigerating compartment during defrosting of the refrigeration compartment evaporator, it is possible to always perform the cooling of the refrigerating compartment.

Refrigerator of the present invention, when a high load such as a large number of opening and closing preserves the refrigerator compartment door at high outside air and high humidity are large quantities charged, and rapidly cooling the refrigerating compartment, further inside temperature predetermined temperature If it stabilizes inside, it will become possible to suppress drying of a foodstuff. Moreover, rapid cooling of the refrigerator compartment can be continued even during defrosting of the cooling wall surface of the refrigerator compartment.

Also, the refrigerator of the present invention can minimize the temperature difference between the temperature distribution of the refrigerated compartment, it is possible to further improve the freshness improving food.

Also, the refrigerator of the present invention, it becomes unnecessary to stop the cooling of the refrigerating compartment during defrosting of the refrigeration compartment evaporator, the cooling of the refrigerating compartment at all times it is possible to carry out, longer capable of holding the inter-food coercive鮮期It is.

The invention is defined in claim 1, and a refrigerating compartment to be cooled by the refrigerating compartment evaporator direct cooling method, a freezing chamber that is cooled by indirect cooling system, and the freezing chamber or the freezing chamber cooling air passage comprising a communication air passage for communicating the refrigerating compartment, a refrigerator compartment air passage for discharging cold air from the communication air passage to the cooling chamber, the opening and closing damper to the communication air passage, the cooling chamber evaporator at the back of the refrigerating compartment In the refrigerator in which the refrigerator is arranged and the refrigerator compartment air passage is disposed so as to avoid the refrigerator compartment evaporator portion, the defrosting of the evaporator in the refrigerator compartment is performed when the open / close damper is connected to the communication air passage. Opening and blowing the cold air in the freezer room or the freezing room cooling air passage into the refrigerating room, and when the open / close frequency of the refrigerating room door is high in high outside air and high humidity, a large amount of stored food is thrown in, etc. When the load is high, open / close damper is opened and the freezer Can sends the cold air from the freezer compartment cooling evaporator to the refrigerating compartment, a cooling wall surface of the refrigerating compartment, to rapidly cool the refrigerating compartment from both the cold air of the freezing chamber or the freezing chamber cooling evaporator. Further, if the temperature in the refrigerator compartment is stabilized within a predetermined temperature, the open / close damper is closed to directly cool only the cooling wall surface of the refrigerator compartment, and drying of food can be suppressed.

Also, during the defrosting of the cooling wall of the refrigerator compartment, control is performed so that the cold air of the freezer compartment or the evaporator for cooling the freezer compartment is blown into the refrigerator compartment by forming an air path that is separated from the evaporator of the refrigerator compartment. Thus, in addition to the effect of claim 1, during the defrosting of the refrigerator compartment, the refrigerator compartment is provided with an air passage that communicates with the freezing compartment or the freezer compartment cooling air passage that is separated from the cooling wall surface. It can be continued.

The invention according to claim 2, the steam Hatsuki, away from the wall surface of the inner box forming a refrigerator compartment, the thermal conductivity of the cooling pipe was attached to the back surface is good veneer e.g. aluminum plate as refrigerating compartment cooler By installing in the refrigerator compartment, in addition to the effect of the invention according to claim 1 or 2, the amount of heat resistance of the refrigerator compartment box, that is, the amount of the thickness of the inner box becomes adiabatic resistance is reduced, and cooling is performed. Since the area of the vessel is increased, the cooling efficiency can be improved.

The invention according to claim 3, a discharge air path to the refrigerated chamber ceiling, the provision of the discharge port, can be cooled in a sheet showers manner, it is possible to reduce the temperature distribution of more refrigeration compartment The food can be uniformly cooled regardless of the position.

Invention according to claim 4, by providing the fan chillers stirring refrigerated chamber, thereby, possible to stir the atmosphere within the refrigeration compartment by operating the refrigerated compartment stirring fan, temperatures of more refrigeration compartment It becomes possible to keep the temperature difference of the distribution to a minimum.

Invention of claim 5, arranged evaporator and the freezing compartment evaporator refrigerated chamber in parallel, and a cooling circuit having a double door can be three-way valve upstream of the evaporator, the refrigerant flows to the evaporator by controlling the, it becomes unnecessary to stop the cooling operation during defrosting of the refrigeration compartment evaporator, it is possible to always perform the cooling of the refrigerating compartment.

  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)
1, 2, and 3 show a longitudinal sectional view of a refrigerator, a front view of a refrigerator compartment, and a configuration diagram of a refrigeration cycle according to Embodiment 1 of the present invention.

  In FIG. 1, the cabinet 1 has shown the refrigerator comprised by the heat insulation box 8 with which the heat insulating material 7 was filled between the inner box 5 and the outer box 6. FIG. The refrigerator has a refrigerated room 21, a storage room 31, and a freezing room 41 from the top, and a front side is a refrigerated room opening / closing door 2, a storage room opening / closing door 3, and a freezing room opening / closing door 4.

  The refrigerating room 21 and the thermal storage room 31 are partitioned by a partition plate 9 having a heat insulation effect, and the thermal storage room 31 and the freezing room 41 are partitioned by a partition plate 10 having a heat insulation effect. In the back of the partition plate 10, a duct 11 connected to the freezer compartment 41 is installed.

  A refrigerator compartment shelf 22 for storing food and a refrigerator compartment case 23 are disposed in the refrigerator compartment 21. In addition, a refrigerator compartment evaporator 19 is disposed on the back of the inner box 5 of the refrigerator compartment 21 in contact with the wall surface, and the refrigerator compartment 21 has a cooling wall surface 20 cooled by the refrigerator compartment evaporator 19. Yes.

  The cooling chamber 51 in the freezing chamber 41 is partitioned by a partition plate 44 having a heat insulating effect. In the cooling chamber 51, a freezer compartment fan 52, a freezer compartment evaporator 53, and a defrosting heater 54 are arranged. The partition plate 44 constitutes a discharge port 43 through which the cool air discharged from the freezer compartment fan 52 is discharged to the freezer compartment 42 for storing food in the freezer compartment 41, and at the back of the partition plate 10. The air passage 11 connected to the refrigerating room 21 and the warming room 31 is provided, branched to the air path 33 and the air path 34, and further, the air path 34 is connected to the refrigerating room air path 24 at the back of the partition plate 9. . An open / close damper 35 and an open / close damper 36 are disposed inside the air passage 33 and the air passage 34.

  As shown in FIG. 2, a refrigerating room air passage 24 is disposed on the rear surface of the refrigerating room 21, avoiding the portion where the refrigerating room evaporator 19 is attached, and cool air is supplied from the refrigerating room air passage 24 to the refrigerating room 21. The refrigeration chamber discharge port 25 for discharging the refrigeration chamber is provided, and the refrigeration chamber air passage 24 is covered with an air passage cover 26.

  FIG. 3 shows a refrigeration cycle. The refrigerant discharged from the compressor 61 is condensed by the condenser 62 and the flow path is switched by the three-way valve 63. One is decompressed by the capillary tube 64, evaporates in the refrigerating room evaporator 19 and the freezing room evaporator 53, and constitutes a refrigerating room / freezing room simultaneous cooling cycle that returns to the compressor 61 through the accumulator 66 again. is doing. The other constitutes a freezer compartment single cooling cycle in which the pressure is reduced by the capillary tube 65, evaporated by the freezer evaporator 53, and returned to the compressor 61 via the accumulator 66. Therefore, the refrigerating room 21 is cooled by the refrigerating room evaporator 19 in contact with the back of the inner box 5, and the freezing room 41 is cooled by blowing the cool air by stirring the latent heat of evaporation of the freezing room evaporator 53 by the freezing room fan 52. ing.

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

  First, when the compressor 61 is operated, the refrigerant is compressed, condensed, and decompressed, whereby the refrigerator compartment evaporator 19 and the freezer compartment evaporator 53 are cooled by the latent heat of evaporation.

  In the refrigerating room evaporator 19, the rear surface of the inner box 5 of the refrigerating room 21 is in contact with the rear surface of the refrigerating room 21, and the back surface of the inner box 5 of the refrigerating room 21 serves as a cooling wall 20. The case 23 is cooled.

  On the other hand, in the freezer compartment evaporator 53 in the cooling chamber 51, cold air is discharged by the freezer fan 52, passes through the air passage in the partition plate 44, and is discharged from the discharge port 43 to the freezer case 42. The discharged cold air exchanges heat with the freezer compartment case 42 and then is sucked in from the lower part of the partition plate 44.

  Furthermore, the cold air discharged by the freezer compartment fan 52 passes through the air passage in the partition plate 44, but a part of the cold air flows into the air passage 11 at the back of the partition plate 10 and passes through the open / close damper 35 to keep the heat. It circulates to the air passage 33 in the back of the chamber 31. The cold air that has flowed into the air passage 33 is discharged from the discharge port 37 to the heat storage case 32, exchanges heat with the heat storage case 32, and then is sucked from the air passage 33 on the back and returned to the cooling chamber 51. At this time, the temperature inside the warming chamber 31 is detected, the opening / closing frequency of the opening / closing damper 35 is changed within the set temperature range, the amount of cold air passing through the opening / closing damper 35 is controlled, and the temperature of the warming chamber 31 is kept constant. It keeps in.

  Then, when a large load such as a large number of opening and closing of the refrigerator compartment door 2 in high outside air and high humidity or a large amount of stored food is input, the temperature in the refrigerator compartment 21 is detected, and when the temperature is higher than the high load judgment temperature The damper 36 is opened, and the cold air is caused to flow into the air passage 34 at the back of the inside of the thermal storage room 31. The cold air that has flowed into the air passage 34 flows into the air passage 24 at the back of the partition plate 9, is discharged from the discharge port 25 to the refrigerating chamber 21, exchanges heat with the food in the refrigerating chamber, and then is on the back of the refrigerating chamber 21. The air is sucked from the air passage 24 and returned to the cooling chamber 51. After the opening / closing damper 36 is opened, when the temperature in the refrigerator compartment 21 is equal to or lower than the unhigh load determination temperature, the opening / closing damper 36 is closed, and only the refrigerator compartment evaporator 19 is cooled.

  As described above, in the present embodiment, the open / close damper 36 that operates by detecting the temperature of the refrigerating chamber 21 is opened and closed, so that the cold air in the freezer chamber 41 or the cold air that has exchanged heat with the freezer evaporator 53 is frozen. The amount of cool air circulating to the refrigerating room 21 is controlled by the room fan 52 so that the inside of the refrigerating room 21 can be rapidly cooled at high loads. When the load is not high, the open / close damper 36 is closed and the refrigerating room evaporator is used. By using only 19 cooling, it becomes a cooling system with only direct cooling, and drying of food can be prevented.

  In the present embodiment, the refrigerator compartment cooling wall surface 20 cools the inside of the refrigerator compartment 21. However, when the refrigerator compartment cooling wall surface 20 forms frost, the three-way valve 63 supplies the refrigerant to the capillary tube 65. It switches to the circuit which flows into a freezer compartment single cooling cycle, the cooling of the refrigerator compartment evaporator 19 is stopped, and the refrigerator compartment cooling wall surface 20 is defrosted. At this time, the open / close damper 36 that operates by detecting the temperature of the refrigerator compartment 21 is opened and closed, and the cooling of the refrigerator compartment 21 is controlled to continue cooling, thereby continuing the cooling of the refrigerator compartment even during defrosting of the refrigerator compartment. It becomes possible.

(Embodiment 2)
4 and 5 show a cross-sectional view of the refrigerator and a front view of the refrigerator compartment according to Embodiment 2 of the present invention. In addition, about the same structure as Embodiment 1, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  4 and 5, the refrigerating room cooler 27 has a structure in which a certain space is maintained from the back of the inner box 5 to the inside of the warehouse. Furthermore, the refrigerator compartment cooler 27 is composed of a heat conductive plate 28 and a refrigerator compartment cooling pipe 29, and the refrigerator compartment cooling pipe 29 is attached to the back surface (inner box 5 side) of the heat conductive plate 28. Yes.

  In addition, since the refrigerating cycle of the refrigerator of this Embodiment is the same structure as the refrigerating cycle of Embodiment 1 shown in FIG. 3, description is abbreviate | omitted.

  About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1 below.

  The refrigerator compartment cooler 27 is cooled by the latent heat of vaporization in the refrigerator compartment cooling pipe 29, and is conducted to the heat conductive plate 28, so that both surfaces of the refrigerator compartment cooler 27 (inner side) and back side (inner box side) are provided. Becomes a cooling surface and cools the refrigerator compartment 21.

  As described above, in the present embodiment, the refrigerator compartment cooler 27 has a structure in which a constant space is maintained from the back of the inner box 5 to the inside of the cabinet, thereby reducing the thermal resistance of the refrigerator compartment box 5. In addition, since the cooling area is expanded, the cooling efficiency can be improved.

(Embodiment 3)
6 and 7 show a cross-sectional view and a front view of the refrigerator according to Embodiment 3 of the present invention. In addition, about the same structure as Embodiment 1 or Embodiment 2, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  6 and 7, a refrigeration room top air passage 71 is formed on the top surface of the refrigeration room 21. Further, the back of the refrigerator compartment top air passage 71 is connected to the refrigerator compartment air passage 24, and the refrigerator compartment top air passage 71 is a refrigerator compartment top air passage cover 73 in which a top discharge port 72 is formed. Covered and fixed.

  In addition, since the refrigerating cycle of the refrigerator of this Embodiment is the same structure as the refrigerating cycle of Embodiment 1 shown in FIG. 2, description is abbreviate | omitted.

  About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated hereafter centering on a different part from Embodiment 1 or Embodiment 2. FIG.

  Part of the cool air discharged by the freezer compartment fan 52 flows into the air passage 11 at the back of the partition plate 10, passes through the air passage 34 through the open / close damper 36, and is sent to the refrigerating compartment air passage 24. A part of the cold air sent to the refrigerator compartment air passage 24 is discharged from the refrigerator compartment outlet 25 to the refrigerator compartment 21. Furthermore, the cold air flows into the refrigerator compartment top air passage 71 connected to the refrigerator compartment air passage 24 and is discharged from the refrigerator compartment top surface discharge port 72 to the refrigerator compartment 21. Then, after exchanging heat with the food in the refrigerator compartment 21, it is sucked from the refrigerator compartment air passage 24 and returned to the cooling compartment 51.

  As described above, in the present embodiment, the partial cold air discharged by the freezer compartment fan 52 passes through the refrigerating room top air passage 71 and is placed on the top surface of the refrigerating room 21. By discharging from the outlet 72, it is possible to cool into the refrigeration chamber 21 by a shower method, and the temperature distribution in the refrigeration chamber 21 can be reduced. It becomes possible to keep it.

(Embodiment 4)
8 and 9 show a sectional view and a front view of the refrigerator in the fourth embodiment of the present invention. In addition, about the same structure as Embodiment 1 or Embodiment 2, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  8 and 9, a refrigerating room agitating fan 81 is provided at the upper rear of the refrigerating room 21, and the refrigerating room agitating fan 81 is covered with a refrigerating room agitating fan cover 82 and fixed to the top of the refrigerating room 21. Has been.

  In addition, since the refrigerating cycle of the refrigerator of this Embodiment is the same structure as the refrigerating cycle of Embodiment 1 shown in FIG. 2, description is abbreviate | omitted.

  About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1, Embodiment 2, or Embodiment 3 below.

  By operating the refrigerating chamber agitating fan 81, the atmosphere of the refrigerating chamber 21 is agitated.

  As described above, in the present embodiment, by operating the refrigerating chamber agitating fan 81, the atmosphere in the refrigerating chamber 21 can be agitated, the temperature distribution in the refrigerating chamber 21 can be reduced, and the food It is possible to maintain a uniform and constant temperature regardless of the position of the position.

(Embodiment 5)
FIG. 10 shows a configuration diagram of the refrigeration cycle of the refrigerator in the fifth embodiment of the present invention. In addition, about the same structure as Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  Since the cross-sectional view and front view of the refrigerator of the present embodiment have the same configuration as the cross-sectional view and front view of the first embodiment shown in FIG. 1 and FIG.

  In FIG. 10, the refrigerant discharged from the compressor 61 is condensed by the condenser 62, and the flow path is switched by a three-way valve 91 that can be double-opened. One of them constitutes a refrigerating room cooling cycle in which the pressure is reduced by the capillary tube 92, evaporated by the refrigerating room evaporator 19, and returned to the compressor 61 again via the accumulator 94. The other constitutes a freezer compartment cooling cycle in which the pressure is reduced by the capillary tube 93, evaporated by the evaporator 53, and returned to the compressor 61 via the accumulator 66. Further, by opening both of the three-way valves 91 that can be opened in both directions, the pressure is reduced in the capillary tube 92 and the capillary tube 93, evaporates in the refrigerator compartment evaporator 19 and the evaporator 53, and passes through the accumulator 94 and accumulator 66. Thus, a refrigerating room / freezing room simultaneous cooling cycle returning to the compressor 61 is also configured.

  About the refrigerator of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated centering on a different part from Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4 below. .

  When the freezer compartment evaporator 53 is frosted and defrosting is required, the refrigerant supply to the freezer compartment evaporator 53 is stopped by setting the double-openable three-way valve 91 to the refrigerating compartment cooling cycle, The evaporation in the freezer compartment evaporator 53 is stopped, and the freezer compartment evaporator 53 is defrosted. At this time, the supply of the refrigerant to the refrigerator compartment evaporator 19 is continued, the cooling wall surface 20 is cooled by the latent heat of evaporation of the refrigerator compartment evaporator 19, and the refrigerator compartment 21 is finally cooled.

  As described above, in the present embodiment, the refrigeration chamber evaporator 19 and the freezer compartment evaporator 53 are arranged in a parallel circuit, and the refrigeration cycle is provided with the three-way valve 91 that can be double-opened upstream of these evaporators. When the room evaporator 53 is defrosted, it is not necessary to stop the cooling of the refrigerating chamber 21, and the refrigerating chamber 21 can be continuously cooled.

  As described above, the refrigerator according to the present invention rapidly cools the refrigerator compartment at the time of high load, and suppresses drying of the food except at the time of high load, thereby improving the freshness of the food. Further, the temperature distribution in the refrigerator compartment can be reduced, and long-term storage is possible by further improving the freshness of the food.

  From the above effects, the present invention can also be applied to uses such as refrigeration equipment other than refrigerators.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Front view of the refrigerator in Embodiment 1 of the present invention Configuration diagram of a refrigeration cycle in Embodiment 1 of the present invention Longitudinal sectional view of the refrigerator in the second embodiment of the present invention Front view of the refrigerator in Embodiment 2 of the present invention Vertical sectional view of the refrigerator in the third embodiment of the present invention Front view of the refrigerator in Embodiment 3 of the present invention Vertical section of the refrigerator in Embodiment 4 of the present invention Front view of the refrigerator in Embodiment 4 of the present invention Configuration diagram of refrigeration cycle in Embodiment 5 of the present invention Vertical sectional view of a refrigerator in the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cabinet 2 Refrigerating room opening / closing door 3 Storage room opening / closing door 4 Freezing room opening / closing door 5 Inner box 6 Outer box 7 Heat insulation material 8 Heat insulation box body 9 Partition plate (refrigeration room / storage room)
10 Partition plate (greenhouse / freezer)
11 Cold Room / Holding Room Collective Air Path 19 Cold Room Evaporator 20 Cooling Wall 21 Cold Room 22 Cold Room Shelf 23 Cold Room Case 31 Hot Room 32 Hot Room Case 33 Hot Room Airway (Back of Hot Room)
34 Airway for refrigerated room
35 Opening / Closing Damper (Greenhouse Airway)
36 Open / close damper (refrigeration room air passage)
37 Discharge port (for greenhouse)
41 Freezer compartment 42 Freezer compartment case 43 Discharge port (for freezer compartment)
44 Partition (freezer / cooling room)
51 Cooling chamber 52 Freezing chamber fan 53 Freezing chamber evaporator 54 Defrosting heater 61 Compressor 62 Condenser 63 Three-way valve 64 Capillary tube (for refrigerating chamber and freezing chamber simultaneous cooling cycle)
65 Capillary tube (for freezer compartment single cooling cycle)
66 Accumulator 71 Refrigerating room top air passage 72 Refrigerating room top air outlet 73 Refrigerating room top air passage cover 81 Refrigerating room stirring fan 82 Refrigerating room stirring fan cover 91 Three-way valve
92 Capillary tube (for refrigeration chamber cooling cycle)
93 Capillary tube (for freezer compartment cooling cycle)
94 Accumulator 95 Check valve

Claims (5)

A refrigerating compartment to be cooled by the refrigerating compartment evaporator direct cooling method, a freezing chamber that is cooled by indirect cooling system, a communication air passage which communicates the freezing chamber or the freezing chamber cooling air passage and the refrigerating chamber A refrigerating chamber air passage that discharges cold air from the communication air passage to the refrigerating chamber, and an open / close damper provided in the communication air passage, the refrigerating chamber evaporator is disposed on the back of the refrigerating chamber, and the refrigerating chamber evaporation In the refrigerator in which the refrigerator compartment air passage is arranged avoiding the portion of the refrigerator, when the frost in the evaporator of the refrigerator compartment is defrosted, the open / close damper is opened in the communication air passage, and the freezer compartment or the freezer compartment A refrigerator characterized in that cool air from a cooling air passage is blown into the refrigerator compartment . An evaporator, away from the wall surface of the inner box forming a refrigerator compartment, claims, characterized in that installed in the refrigerating chamber-compartment heat conductivity of the cooling pipe was attached to the back surface is good veneer as a cooling wall The refrigerator according to 1 . The refrigerator according to claim 1 or 2 , wherein a discharge air passage and a discharge port are provided on the top of the refrigerator compartment. The refrigerator according to claim 1 or 2 , wherein a fan for stirring the refrigerator compartment is provided in the refrigerator compartment. When the evaporator in the freezer compartment and the evaporator in the freezer compartment are arranged in parallel and a three-way valve that can be double-opened upstream of the evaporator is used to cool the refrigerator compartment when defrosting the evaporator frost in the freezer compartment The refrigerator according to any one of claims 1 to 4 , wherein the refrigerator is controlled so as not to stop.