JP2005195293A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator including a refrigerating chamber cooled by a direct cooling system, a freezing chamber cooled by an indirect cooling system, and two or more heat insulating chambers in addition to the above, improving the freshness retention of food by controlling the heat insulating chamber to a preset temperature and having excellent convenience in use. <P>SOLUTION: Latent heat of vaporization of an evaporator 53 is circulated through the heat insulating chambers 31 by a freezing chamber fan 54, and further the quantity of cold air circulated by a mechanical damper 34 detecting the temperature of the heat insulation chamber 31 is controlled to keep the temperature of the heat insulating chamber 31 constant, whereby the temperature of food in the heat insulating chamber case 32 can be kept constant to improve the freshness retention of food. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator having a plurality of storage rooms different from 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, and an evaporator and returns to the compressor again. There are a direct cooling type that cools the inside and an indirect cooling type that cools the inside of the box by circulating the cool air cooled by the evaporator. (For example, refer to Patent Document 1).

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

FIG. 9 is a schematic cross-sectional view of a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 9, in the conventional refrigerator, the refrigeration zone 122 and the freezing zone 123 are divided into upper and lower portions by a partition plate 121 having a heat insulating effect. And a vegetable compartment 124 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 2000-28257 A

  However, in the above-described conventional configuration, the temperature of the vegetable room in the refrigeration zone depends on the temperature of the refrigeration room, so that it is difficult to control the temperature.

  On the other hand, the first freezer compartment also has the disadvantage that it is difficult to control the temperature because it is affected by the temperature of the second freezer compartment, is restricted in use, and is not convenient.

  The present invention solves the conventional problems, and has an object of providing a refrigerator that has a plurality of independent greenhouses, improves food freshness, and is easy to use than controlling them to a set temperature. .

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerating room that is cooled by a direct cooling method, a freezing room that is cooled by an indirect cooling method, and a plurality of other storage rooms. In the thing, the duct connected to the freezer compartment cooled by the indirect cooling system, the discharge inlet of the cold air, and the air path provided with the damper in the duct are configured, and the plurality of air paths are installed in the warming chamber. It is.

  Thus, the temperature of the food can be kept constant by controlling the amount of cold air within the set temperature (operating temperature) range of the damper in the duct and keeping the temperature keeping room at a constant temperature.

  In addition, the refrigerator of the present invention includes a refrigerator compartment that is cooled by a direct cooling method, a freezing chamber that is cooled by an indirect cooling method, and a plurality of other thermal insulation chambers. It is installed indoors.

  This makes it possible to control the temperature keeping room to an arbitrary temperature that is equal to or higher than the temperature of the refrigerating room, to heat and keep food, and to improve usability.

  The refrigerator of the present invention includes a refrigerating room cooled by a direct cooling method, a freezing room cooled by an indirect cooling method, and a plurality of other warming chambers. It can be controlled by temperature, can keep food fresh, and can improve usability.

  The invention according to claim 1 is connected to the freezer compartment in a refrigerator compartment that is cooled by a direct cooling method, a freezer compartment that is cooled by an indirect cooling method, and a plurality of other storage chambers. By configuring the duct, the cool air discharge inlet, and the air path with dampers in the duct, and installing the air paths in the greenhouse, the set temperature (operating temperature) range of the dampers in the duct By controlling the amount of cold air inside and keeping the temperature keeping room at a constant temperature, the temperature of the food can be kept constant, and the freshness of the food can be improved.

  According to a second aspect of the present invention, in the first aspect of the present invention, an air passage in which an electric damper is provided in the duct is configured, and the plurality of air passages are installed in the heat retention chamber, whereby the heat retention chamber is provided. It can be controlled to an arbitrary temperature, and usability can be improved. Furthermore, when the warmer is not used, it is not necessary to circulate the cold air to the warmer, and by forcibly closing the electric damper, useless cooling can be prevented and power consumption can be suppressed. Furthermore, when defrosting the evaporator in the cooling chamber, the electric damper can be closed to prevent the intrusion of warm and humid air into the greenhouse, preventing frost formation and reducing power consumption by improving the defrosting efficiency. It becomes possible.

  The invention according to claim 3 is connected to the freezer compartment in a refrigerator room that is cooled by a direct cooling system, a freezer room that is cooled by an indirect cooling system, and a plurality of other storage rooms. A duct, a discharge inlet for cold air, and an air passage provided with a thermal insulation fan in the duct are configured, and the plural air passages are installed in the thermal insulation room, thereby adjusting the amount of cold air to the thermal insulation room and keeping warm. The room can be controlled to an arbitrary temperature, and it is possible to improve the freshness and usability of food. In addition, the food cooling rate such as rapid cooling and slow cooling can be controlled, and the freshness of the food can be further improved.

  The invention according to claim 4 includes a refrigerating room cooled by a direct cooling method, a freezing room cooled by an indirect cooling method, and a plurality of other storage chambers. Since it is installed in the warming chamber, the warming chamber can be controlled to an arbitrary temperature that is equal to or higher than the temperature of the refrigerating room, food can be heated and warmed, and usability can be improved.

  In the invention according to claim 5, in the invention according to any one of claims 1 to 3, by providing a plurality of heaters in the warming room, it is possible to control the warming room to a fine arbitrary temperature. In addition, the food can be heated and cooled in an arbitrary time, and the processability of the food can be improved.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to third aspects or the fifth aspect of the present invention, by providing a discharge duct and a discharge port on the top surface of the warming room, cold air is introduced into the warming room. Can be cooled by a shower method, and it becomes possible to further reduce the temperature distribution in the temperature-retaining room, and the food can be uniformly cooled regardless of the position.

  According to a seventh aspect of the invention, in the invention according to any one of the first to sixth aspects, a fan for agitating the inside of a greenhouse is provided in the greenhouse, so that local heating by a heater is performed by circulating air in the room. Therefore, it is possible to further reduce the temperature distribution in the warming room.

  The invention according to claim 8 is the invention according to any one of claims 1 to 3 or claim 5, wherein the air path is provided with an aluminum plate and a duct, and the plurality of air paths are kept warm. By installing it on the top of the room, it is possible to cool the inside of the storage room with the aluminum plate on the top of the storage room, and it is difficult to reduce the humidity inside the storage room because the cool air is not circulated directly into the storage room. It becomes possible to reduce the drying of food.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the freezer compartment is provided with a freezer compartment fan capable of changing the number of revolutions, so that it is necessary to cool the cold storage room and the freezer compartment. When a new food is introduced, the number of rotations of the freezer compartment fan is increased to increase the cool air to the storage room and the freezing room, and the food in the storage room and the freezing room can be rapidly cooled. Furthermore, when the temperature-retaining room and the freezer compartment are sufficiently cooled, the rotational speed of the freezer compartment fan can be reduced, the input of the freezer compartment fan can be reduced, and the power consumption of the freezer compartment fan can be reduced. And by reducing the number of rotations of the freezer compartment fan, it is possible to reduce the freezer compartment fan noise and to reduce the noise.

  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 shows a longitudinal cross-sectional view of the refrigerator 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. Further, a tube-on-sheet 19 (evaporator) is disposed in contact with the wall surface on the back of the inner box 5 of the refrigerator compartment 21, and the refrigerator compartment 21 has a cooling wall surface cooled by the tube-on-sheet 19. ing.

  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, an 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. An air passage that leads to a duct 11 that leads to a certain warming room 31 is also configured.

  FIG. 2 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, evaporated by the tube-on-sheet 19 and the evaporator 53, and constitutes a refrigerating room / freezing room simultaneous cooling cycle that returns to the compressor 61 through the accumulator 66 again. . The other constitutes a freezer compartment single cooling cycle in which the pressure is reduced by the capillary tube 65, evaporated by the evaporator 53, and returned to the compressor 61 via the accumulator 66. Therefore, the refrigerator compartment 21 is cooled by the tube-on-sheet 19 that is in contact with the back of the inner box 5, and the freezer compartment 41 is cooled by stirring the latent heat of evaporation of the evaporator 53 by the freezer compartment fan 52.

  Inside the warm room 31 is a warm room case 32 for storing food, and a duct 33 having a mechanical damper 34 inside is arranged on the back. The duct 33 is connected to the duct 11 at the back of the partition plate 10, and has a discharge port 35 for discharging into the thermal storage chamber 31 on the downstream side of the mechanical damper 34.

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

  First, by operating the compressor 61, the refrigerant is compressed, condensed, and decompressed, whereby the tube-on-sheet 19 and the evaporator 53 are cooled by latent heat of vaporization.

  The tube-on-sheet 19 is in contact with the back surface of the inner box 5 of the refrigerating room 21, and the back surface of the inner box 5 of the refrigerating room 21 serves as a cooling wall surface, and the refrigerating room shelf 22 and the refrigerating room case 23 in the refrigerating room 21. The cooling is done.

  On the other hand, in the evaporator 53 in the cooling chamber 51, the cold air is discharged by the freezer compartment fan 52, passes through the air passage in the partition plate 44, and is discharged from the discharge port 43 to the freezer compartment 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.

  Further, 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 duct 11 at the back of the partition plate 10, and the duct 33 on the rear surface in the warming chamber 31. It will circulate to. The cold air that has flowed into the duct 33 passes through the mechanical damper 34, is discharged from the discharge port 35 to the warming chamber case 32, exchanges heat with the warming chamber case 32, and then is sucked from the duct 33 on the back surface to be cooled. Returned to At this time, the heat sensitive part of the mechanical damper 34 detects the temperature in the thermal insulation chamber 31, and passes through the mechanical damper within the set temperature (operating temperature) range of the mechanical damper 34 due to the temperature change of the thermal insulation room 31. The amount of cold air to be controlled is controlled, and the temperature of the warming chamber 31 is kept constant.

  As described above, in the present embodiment, the latent heat of vaporization of the evaporator 53 is circulated into the warming chamber 31 by the freezer compartment fan 52, and further circulated by the mechanical damper 34 that detects the temperature of the warming chamber 31. By controlling the amount of cold air to be kept, the temperature of the food storage chamber 31 is kept constant, whereby the temperature of the food in the heat storage case 32 can be kept constant, and the freshness of the food can be improved.

  Further, by making the mechanical damper 34 of the present embodiment an electric damper, in particular, there is no restriction of the set temperature (operating temperature) that was the mechanical damper 34, and the warming chamber 31 is controlled to an arbitrary temperature. It is possible to create a temperature suitable for various foods. In addition, forced closing, which was impossible with the mechanical damper 34, becomes possible, and when the warmer 31 is not used, it is not necessary to circulate cold air to the warmer 31 and by forcibly closing the electric damper, Useless cooling can be prevented and power consumption can be reduced. In addition, when the evaporator 53 in the cooling chamber 51 is defrosted, the electric damper is forcibly closed to prevent the intrusion of warm and humid air into the temperature-retaining room 31, thereby preventing frost formation and improving the defrosting efficiency. It becomes possible to suppress the power consumption by.

  In addition, by making the mechanical damper 34 of the present embodiment a variable temperature keeping fan that can change the number of rotations, the amount of cold air to the warming constant 31 is adjusted, and the set temperature (operating temperature) of the mechanical damper 34 is adjusted. There are no restrictions, and it is possible to control the temperature-preserving chamber 31 to an arbitrary temperature, and it is possible to create a temperature suitable for various foods. In addition, the cooling rate such as rapid cooling and slow cooling can be controlled, and the freshness of food can be further improved.

(Embodiment 2)
FIG. 3 shows a cross-sectional view of the vicinity of the greenhouse in the refrigerator according to the second embodiment 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.

  In FIG. 3, the warm storage chamber 31 and the freezer compartment 41 are partitioned by a partition plate 71 containing a heater 75. The partition plate 71 has a structure in which a heat insulating material 74 is filled between the bottom wall 72 of the thermal storage 31 and the top wall 73 of the freezer compartment 41. Furthermore, the heater 75 is disposed in contact with the wall surface of the bottom wall 72 of the warming chamber 31, and the inside of the warming chamber 31 has a heating wall surface heated by the heater 75.

  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, detailed 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 energization rate of the heater 75 is adjusted by means for detecting the temperatures of the refrigerating room 21, the warming room 31, and the freezing room 41 to change the heat generation amount. The heater 75 is in contact with the wall surface of the bottom wall 72 of the warm chamber 31, and the bottom wall 72 of the warm chamber 31 serves as a heating wall surface to heat the warm chamber case 32 in the warm chamber 31.

  As described above, in the present embodiment, the temperature of the cold storage room 21, the warming room 31, and the freezing room 41 is adjusted by adjusting the energization rate of the heater 75 and controlling the calorific value. It can be heated, and the temperature of the food in the storage room case 32 can be kept constant in a temperature range equal to or higher than the temperature of the refrigerator compartment. In addition, by adjusting the amount of heat generated by the heater 75, the heating rate of the food can be controlled, and usability can be improved.

(Embodiment 3)
FIG. 4 shows a cross-sectional view of the vicinity of the greenhouse in 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.

  In FIG. 4, the thermal storage chamber 31 and the freezer compartment 41 are partitioned by a partition plate 81 that incorporates a heater 75. The partition plate 81 has a structure in which a heat insulating material 74 is filled between the bottom wall 72 of the warming chamber 31 and the top wall 73 of the freezer compartment 41. Furthermore, the heater 75 is disposed in contact with the wall surface of the bottom wall 72 of the warming chamber 31, and the inside of the warming chamber 31 has a heating wall surface heated by the heater 75.

  A duct 33 having a mechanical damper 34 inside is disposed on the back surface of the warming chamber 31. The duct 33 is connected to the duct 11 in the back of the partition plate 81, and has a discharge port 35 for discharging into the thermal storage chamber 31 on the downstream side of the mechanical damper 34.

  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 cold air discharged by the freezer compartment fan 52 flows into the duct 11 at the back of the partition plate 81 and circulates to the duct 33 at the back of the thermal storage room 31. The cold air that has flowed into the duct 33 passes through the mechanical damper 34, is discharged from the discharge port 35 to the warming chamber case 32, exchanges heat with the warming chamber case 32, and then is sucked from the duct 33 on the back surface, and the cooling chamber 51. Returned to At this time, the heat-sensitive part of the mechanical damper 34 detects the temperature in the thermal storage chamber 31, and the mechanical damper 34 is moved within the set temperature (operating temperature) range of the mechanical damper 34 due to the temperature change of the thermal storage chamber 31. The amount of cool air passing through is controlled and the temperature is kept constant.

  Furthermore, the electricity supply rate of the heater 75 is adjusted by means for detecting the temperatures of the refrigerator compartment 21, the storage room 31, and the freezing room 41, the heat generation amount is changed, and the storage room case 32 in the storage room 31 is heated. .

  As described above, in the present embodiment, the temperature of the thermal storage room 31 is kept constant by controlling the amount of cold air circulated by the mechanical damper 34 that detects the temperature of the thermal storage room 31, and the refrigerator compartment 21. By adjusting the power supply rate of the heater 75 by means for detecting the temperature of the temperature-preserving chamber 31 and the freezer compartment 41 and controlling the amount of heat generated, the food in the temperature-preserving chamber 32 can be kept at a fine and constant temperature. It becomes.

  In addition, the mechanical damper 34 of the present embodiment is an electric damper, thereby adjusting the temperature-retaining room 31 to an arbitrary temperature, and further controlling the amount of heat generated by the heater 75, so that the food in the food storage case 32 can be controlled. It is possible to keep the temperature at a fine arbitrary temperature. Further, by adjusting the opening rate of the electric damper and the amount of heat generated by the heater 75, the food can be heated → cooled, cooled → heated, and the processability of the food can be improved.

  In addition, the mechanical damper 34 of the present embodiment is used as a greenhouse fan so that the number of rotations of the greenhouse fan can be varied and the amount of heat generated by the heater 75 can be controlled to determine the food in the greenhouse case 32. It becomes possible to maintain a fine arbitrary temperature. In addition, cooling such as rapid cooling, slow cooling, rapid heating, slow heating, and the like can be controlled, and the freshness and processability of food can be further improved.

(Embodiment 4)
FIG. 5 shows a cross-sectional view of the vicinity of the greenhouse in the refrigerator according to Embodiment 4 of the present invention. In addition, about the same structure as Embodiment 1, Embodiment 2, or Embodiment 3, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  In FIG. 5, the refrigerating room 21 and the storage room 31 are partitioned by a partition plate 91 having a top surface duct 94. The partition plate 91 has a structure in which a heat insulating material 95 is filled between the bottom wall 92 of the refrigerating chamber 21 and the top wall 93 of the warming chamber 31. Furthermore, a part of the heat insulating material 95 is deleted in a concave shape, and the top surface duct 94 is configured between the wall surface of the top surface wall 93 of the warming chamber 31. In addition, the depth of the top surface duct 94 is connected to the mechanical damper 34 outlet side air path of the rear duct 33 of the thermal insulation 31. A plurality of discharge ports 96 are formed in the ceiling wall 93 of the warming chamber 31 constituting the ceiling duct 94.

  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.

  Part of the cold air discharged by the freezer compartment fan 52 flows into the duct 11 at the back of the partition plate 81 and circulates to the duct 33 at the back of the thermal storage room 31. The cold air flowing into the duct 33 passes through the mechanical damper 34 and is sent to the top surface duct 94. Cooling chamber 31 constituting ceiling panel 94 is discharged from the outlet 96 of the ceiling wall 93 from the top wall 93, and is heat-exchanged with the chamber storage wall 32, and then sucked from the duct 33 on the back surface to be cooled. Returned to chamber 51.

  As described above, in the present embodiment, the cold air that has passed through the mechanical damper 34 passes through the top surface duct 94 and is discharged from the discharge port 96 of the top surface wall 93 of the warm room 31, thereby showering into the warm room 31. It is possible to cool by the method, it is possible to reduce the temperature distribution in the greenhouse case 32, and it is possible to maintain a uniform and constant temperature regardless of the position of the food.

Further, by using the mechanical damper 34 of the present embodiment as an electric damper, it is possible to maintain a delicate and uniform arbitrary temperature regardless of the position of the food.
In addition, by using the mechanical damper 34 of the present embodiment as a greenhouse fan, it is possible to maintain a delicate and uniform arbitrary temperature regardless of the position of the food as described above. .

(Embodiment 5)
FIG. 6 shows a cross-sectional view of the vicinity of the greenhouse in the refrigerator according to 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.

  In FIG. 6, the agitating fan 36 in the greenhouse is disposed on the back surface of the greenhouse 32 in the greenhouse 31.

  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, Embodiment 3, or Embodiment 4 below.

  The atmosphere around the storage room case 32 is stirred by rotating the storage room stirring fan 36.

  As described above, in the present embodiment, the atmosphere around the warming chamber case 32 can be stirred by rotating the warming chamber stirring fan 36, and the temperature distribution in the warming chamber case 32 can be reduced. This makes it possible to maintain a uniform and constant temperature regardless of where the food is placed. Furthermore, local circulation by the heater 75 can be prevented by circulation of the atmosphere, and the temperature distribution in the warming chamber case 32 can be further reduced.

(Embodiment 6)
FIG. 7 shows a cross-sectional view of the vicinity of the greenhouse in the refrigerator according to Embodiment 6 of the present invention. In addition, about the same structure as Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, or Embodiment 5, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

  In FIG. 7, the refrigerating room 21 and the storage room 31 are partitioned by a partition plate 101. The partition plate 101 has a structure in which a heat insulating material 105 is filled between the bottom wall 102 of the refrigerating chamber 21 and the top wall 103 of the warming chamber 31. Furthermore, a part of the heat insulating material 105 is deleted in a concave shape, and the top surface duct 104 is configured between the top surface wall 103 and the heat retaining chamber 31. Further, the depth of the top surface duct 104 is connected to the mechanical damper 34 outlet side air path of the rear duct 33 of the warming chamber 31 and the return air path returning to the cooling chamber 51. An aluminum plate 106 is fitted into the top wall 103 of the warming chamber 31 constituting the top duct 104.

  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 centering on a different part from Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, or Embodiment 5 below, The operation will be described.

  Part of the cold air discharged by the freezer compartment fan 52 flows into the duct 11 at the back of the partition plate 81 and circulates to the duct 33 at the back of the thermal storage room 31. The cold air flowing into the duct 33 passes through the mechanical damper 34 and is sent to the top surface duct 104. The aluminum plate 106 of the ceiling wall 103 that constitutes the ceiling duct 104 is cooled by the cold air passing through, and the greenhouse holding case 32 below is cooled by natural convection. The cold air that has passed through the top surface duct 104 passes through the return air passage of the duct 33 on the back surface and is returned to the cooling chamber 51.

  As described above, in the present embodiment, the cold air that has passed through the mechanical damper 34 passes through the top surface duct 104 and cools the aluminum plate 106 fitted in the top surface wall 103 of the temperature maintaining wall 31, thereby Since the inside of 31 is cooled by the natural convection method and the cold air is not circulated directly into the warming chamber 31, the humidity in the warming chamber 31 can be suppressed and the drying of food can be reduced.

(Embodiment 7)
FIG. 8 shows a sectional view around the freezer compartment of the refrigerator according to the seventh embodiment of the present invention. In addition, about the same structure as Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5, or Embodiment 6, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted. .

  In FIG. 8, the cooling chamber 51 in the freezing chamber 41 is partitioned by a partition plate 112 having a heat insulating effect. The partition plate 112 is fitted with a freezer compartment fan 111 having a variable rotational speed. An evaporator 53 and a defrosting heater 54 are arranged in the cooling chamber 51. The partition plate 112 constitutes a discharge port 43 through which the cool air discharged from the variable-speed freezer compartment fan 111 is discharged into the freezer compartment case 42 in the freezer compartment 41, and a warming chamber located in the back of the partition plate 10. An air passage leading to the duct 11 leading to 31 is also configured.

  Regarding the refrigerator according to the present embodiment configured as described above, the following points are mainly focused on differences from the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, or the sixth embodiment. Next, the operation and action will be described.

  In the evaporator 53 in the cooling chamber 51, the cool air is discharged by the variable rotation speed freezer fan 111, passes through the air passage in the partition plate 112, and is discharged from the discharge port 43 to the freezer compartment case 42. The discharged cool air exchanges heat with the freezer compartment case 42 and then is sucked from the lower part of the partition plate 112.

  Further, the cold air discharged by the rotation speed variable freezer fan 111 passes through the air passage in the partition plate 112, but a part of the cold air flows into the duct 11 at the back of the partition plate 10, It circulates to a certain duct 33.

  As described above, in the present embodiment, it is possible to vary the rotation speed by using a freezer compartment fan that can vary the rotation speed. Therefore, when foods that need to be cooled are put into the hot storage chamber 31 and the freezer compartment 41, the rotational speed variable freezer fan 111 is increased in rotational speed to increase the cool air to the hot storage chamber 31 and the freezer compartment 41, and rapidly. In addition, the food in the storage room 31 and the freezing room 41 can be cooled. Furthermore, when the temperature-retaining room 31 and the freezer compartment 41 are sufficiently cooled, the rotational speed of the variable-speed freezer compartment fan 111 is reduced and the input is reduced, thereby reducing the power consumption of the variable-speed freezer compartment fan 111. Can be achieved. Then, by reducing the rotation speed of the variable speed freezer fan 111, the noise of the rotation speed variable freezer fan 111 can be reduced, and the noise can be reduced.

  As described above, the refrigerator according to the present invention can control the temperature-preserving room at a constant temperature or an arbitrary temperature, and can keep food fresh and improve usability and improve food freshness. Therefore, it is applicable also to uses, such as refrigeration equipment other than a refrigerator.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this 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 Vertical sectional view of the refrigerator in the third embodiment of the present invention Vertical section of the refrigerator in Embodiment 4 of the present invention Vertical section of the refrigerator in Embodiment 5 of the present invention Vertical section of the refrigerator in Embodiment 6 of the present invention Vertical section of the refrigerator in Embodiment 7 of the present invention Vertical sectional view of a refrigerator in the prior art

Explanation of symbols

1 Cabinet 11, 33 Duct 19 Tube on sheet (evaporator)
21 Refrigerating room 31 Storage room 34 Mechanical damper 35 Outlet (for storage room)
36 Fan for agitating inside the greenhouse 41 Freezer compartment 43 Discharge port (for freezer compartment)
52 Freezer compartment fan 53 Evaporator 75 Heater 94, 104 Top duct 96 Discharge port 106 Aluminum plate 111 Rotation speed variable freezer fan

Claims (9)

In a refrigerator room cooled by a direct cooling system, a freezing room cooled by an indirect cooling system, and a plurality of other storage rooms, a duct connected to the freezing room, a discharge outlet for cold air, A refrigerator comprising a duct provided with a damper in a duct, wherein the plurality of wind paths are installed in a warming chamber. The refrigerator according to claim 1, wherein an air passage provided with an electric damper is provided in a duct, and the plurality of air passages are installed in a warming chamber. In a refrigerator room cooled by a direct cooling system, a freezing room cooled by an indirect cooling system, and a plurality of other storage rooms, a duct connected to the freezing room, a discharge outlet for cold air, A refrigerator characterized in that an air passage provided with a greenhouse fan in a duct is configured, and the plurality of air passages are installed in the greenhouse. It is characterized by having installed a plurality of heaters in a refrigerating room that is cooled by a direct cooling method, a freezing room that is cooled by an indirect cooling method, and a plurality of other warming chambers. Refrigerator. The refrigerator according to any one of claims 1 to 3, wherein a plurality of heaters are provided in the storage room. The refrigerator according to any one of claims 1 to 3 or claim 5, wherein a discharge duct and a discharge port are provided on the top surface of the warming room. The refrigerator according to any one of claims 1 to 6, wherein a fan for stirring in the warming chamber is provided in the warming chamber. The refrigerator according to any one of claims 1 to 3 or claim 5, wherein an air path provided with an aluminum plate and a duct is configured, and the plurality of air paths are installed on the top surface of the thermal storage room. . The refrigerator according to any one of claims 1 to 8, wherein the freezer compartment is provided with a freezer compartment fan capable of changing a rotation speed.

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