JP5510077B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator having a high energy saving effect.

  FIG. 6 is a cross-sectional view of the basic structure of a freezer compartment of a conventional refrigerator.

  As shown in FIG. 6, a door gasket 12 is provided over the entire periphery at the end of the inner surface of the heat insulating door 11, and the metal receiver configured on the front surface of the partition wall 13 that forms the receiving surface of the door gasket 12. The member 14 and the door gasket 12 are brought into close contact with each other to prevent cold air from leaking to the outside.

  Cold air generated by a cooler 15 installed on the back of the main body is blown out from the discharge port 17 on the back of the freezer compartment 25 by a fan 16 to cool the food stored therein.

  The cold air that cools the food reaches the upper front portions of the storage cases 18 and 19 as indicated by arrows, and the space between the inner wall of the heat insulating door 11 and the front surfaces of the storage cases 18 and 19, and the bottom surface of the storage case 19. And circulation through the space between the return duct 21 and the cooler 15 through the space between the storage wall and the bottom wall.

  Further, the cool air reaching the upper front of the storage case 18 cools the front surface of the partition wall 13 that partitions the freezer compartment 25 and the upper storage chamber 22, and condensation forms on the front surface of the partition wall 13 due to a temperature difference between the inside and outside. In order to prevent this, the heat radiating pipe 23 is disposed so as to be in close contact with the side surface of the metal receiving member 14 in the storage chamber. The heat radiating pipe 23 uses a high-temperature refrigerant pipe in a refrigeration cycle (not shown), and the front surface of the partition wall 13 is heated to a high temperature by the heat. The front upper air was heated and the cooling efficiency was lowered.

  In order to prevent this, a mechanism has been proposed in which a seal member 24 indicated by a two-dot chain line is provided in the upper space portion of the storage case 18 in the vicinity of the partition wall 13 to shield the cold air flow toward the door gasket 12 ( For example, see Patent Document 1).

Japanese Patent No. 3387333

  In the conventional configuration, a seal member 24 is provided on the partition wall 13 in order to prevent the cold air in the storage chamber from being heated by heat exchange with the metal receiving member 14 heated by the heat radiating pipe 23. The seal member 24 and the storage case 18 are brought into contact with each other to shield the cool air flow to the metal receiving member 14. However, in the conventional configuration, when the sealing performance deteriorates due to deterioration of the sealing member 24 over time, the cold air cannot be shielded, and heat is exchanged with the high-temperature metal receiving member 14 to heat the cold air. It had the subject that efficiency fell. Further, there is a problem that the cost and assembly man-hours due to the addition of the seal member 24 increase.

In order to solve the conventional problems, the refrigerator of the present invention is a storage formed by a heat insulating box, a heat insulating door that opens and closes the front surface of the opening of the heat insulating box, and the heat insulating box and the heat insulating door. A cooling means for supplying cold air that cools the storage chamber by forced convection or natural convection, a partition wall that divides the storage chamber and another storage chamber adjacent to the storage chamber, and a front surface of the partition wall Provided with a heat exchange suppressing structure that suppresses heat exchange between the cold air in the storage chamber and the metal receiving member, between the metal receiving member and the storage chamber, The heat exchange suppression structure is a structure in which a heat insulating member is provided between the metal receiving member and the storage chamber, the storage chamber is a freezing chamber, and the heat insulating member is provided directly below the metal receiving member. The heat insulating member constitutes the outer periphery of the partition wall. That is held flush integrally with a resin portion, by increasing the lateral length of the heat insulating member than the length of the lower flange of said metal receiving member, which the lower flange is covered by the heat insulating member It is.

  As a result, the metal receiving member is prevented from being cooled by heat conduction from the cold air in the storage chamber, and condensation of the metal receiving member is prevented.

  Further, the cold air in the storage chamber is suppressed from being heated by exchanging heat with the metal receiving member.

  The refrigerator according to the present invention can provide a refrigerator in which condensation of the metal receiving member is prevented, the cold air in the storage chamber is suppressed from being heated, the cooling efficiency is improved, and the power consumption is reduced.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Cross-sectional view of the freezer compartment of the refrigerator in Embodiment 1 of the present invention The principal part expanded sectional view of the refrigerator in Embodiment 1 of this invention. The principal part expanded sectional view of the refrigerator in Embodiment 2 of this invention. The principal part expanded sectional view of the refrigerator in Embodiment 3 of this invention. Sectional view of a freezer in a conventional refrigerator

The invention according to claim 1 includes a heat insulating box, a heat insulating door that opens and closes an opening front of the heat insulating box, a storage chamber formed by the heat insulating box and the heat insulating door, and the storage chamber. Cooling means for supplying cold air to be cooled by forced convection or natural convection, a partition wall that partitions the storage chamber and another storage chamber adjacent to the storage chamber, and a metal receiving member provided on the front surface of the partition wall; Provided with a heat exchange suppression structure that suppresses heat exchange between cold air in the storage chamber and the metal receiving member between the metal receiving member and the storage chamber. A heat insulating member is provided between the metal receiving member and the storage chamber, the storage chamber is a freezing chamber , the heat insulating member is provided directly below the metal receiving member, and the heat insulating member is the coercive flush integrally with a resin portion constituting the outer periphery of the partition wall In addition, since the lateral length of the heat insulating member is made larger than the length of the lower flange of the metal receiving member, and the lower flange is covered with the heat insulating member, heat conduction from the cold air in the storage chamber is performed. As a result, the metal receiving member is prevented from being cooled, and condensation of the metal receiving member is prevented. In addition, the cold air in the storage chamber is prevented from being heated by exchanging heat with the metal receiving member, so that the cooling efficiency can be prevented from being lowered, and a refrigerator with reduced power consumption can be provided. it can.

  According to a second aspect of the present invention, in the refrigerator of the first aspect of the invention, a storage case that can be pulled out into the storage chamber is provided, so that a space is provided between the inner wall surface of the storage chamber and the storage case. The cold air flows through the space as an air passage, and the cold air is distributed throughout the storage chamber, whereby the temperature distribution can be made uniform.

  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 the refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the freezer compartment of the refrigerator according to Embodiment 1 of the present invention. FIG. 3 is an enlarged cross-sectional view of a main part of the refrigerator in the first embodiment of the present invention.

  In FIG. 1, a heat insulating box 101 of a refrigerator 100 is mainly composed of an outer box 102 using a steel plate and an inner box 103 molded of a resin such as ABS. The material is filled, insulated from the surroundings, and divided into a plurality of storage rooms. The refrigerator compartment 104 is arranged at the top, the vegetable compartment 105 is arranged at the bottom of the refrigerator compartment 104, and the freezer compartment 106 is arranged at the bottom.

  Each storage chamber has its front opening closed by heat insulating doors 117, 118, and 119 that are pivotally supported integrally with the refrigerator body.

  The refrigerator compartment 104 is normally set to 1 ° C. to 5 ° C. at the lower limit of the temperature at which it does not freeze for refrigerated storage, and the vegetable compartment 105 is set to 2 ° C. to 7 ° C., which is a temperature setting that is equal to or slightly higher than that of the refrigerator compartment 104. The freezer compartment 106 is set to a freezing temperature zone, and is usually set at −22 ° C. to −15 ° C. for frozen storage, but for example, −30 ° C. or −25 ° C. to improve the frozen storage state. It may be set at a low temperature.

  A machine room 107 is formed in the lowermost region of the freezer compartment 106 in the lowermost part of the heat insulating box 101, and a compressor 108 and high-pressure side components of the refrigeration cycle such as a dryer (not shown) for removing moisture are accommodated.

  In FIG. 2, a cooling chamber 109 for generating cold air is provided on the back surface of the freezing chamber 106, and a cooling air conveyance air passage to each chamber having heat insulation properties and an insulating partition with each chamber are provided between them. The rear surface partition wall 110 is configured. A cooler 111 is disposed in the cooling chamber 109, and in the upper space of the cooler 111, cold air cooled by the cooler 111 by a forced convection method is blown to the refrigerator compartment 104, the vegetable compartment 105, and the freezer compartment 106. The cooling fan 112 is disposed, and a lower space of the cooler 111 is provided with a radiant heater 113 made of a glass tube for defrosting the cooler 111 and its surroundings during cooling, and further below that A drain pan 114 for receiving defrosted water generated at the time of defrosting and draining it outside the storage is configured, and an evaporating dish 116 is configured outside the storage on the downstream side.

  The rear partition wall 110 has a discharge port 124 for guiding the cool air generated by the cooler 111 to the freezer compartment 106 by the cooling fan 112 and a suction for returning the cool air circulated in the freezer compartment 106 to the cooler 111. And a mouth 125.

In the freezer compartment 106, storage cases 126, 127, and 128 for storing foods are arranged while being held and pulled out by a drawer mechanism.

  In FIG. 3, a door gasket 121 is provided at the end of the inner surface of the heat insulating door 119 over the entire circumference (the same applies to the refrigerator compartment 104 and the vegetable compartment 105), and the outer periphery that divides the vegetable compartment 105 and the freezer compartment 106. The metal receiving member 123 provided on the front surface of the partition wall 122 formed of the resin portion and the door gasket 121 are brought into close contact with each other to prevent cold air from leaking to the outside.

  In addition, a heat exchange suppression structure is provided between the metal receiving member 123 and the freezing chamber 106 to suppress heat exchange between the cold air in the freezing chamber 106 and the metal receiving member 123.

  Specifically, the heat insulating member 130 is provided directly below the metal receiving member 123. The heat insulating member 130 is held by a resin portion that forms the outer periphery of the partition wall 122.

  Here, the heat insulating member 130 is an example of a heat exchange suppressing structure in the present invention.

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

  First, the flow of cold air in the freezer compartment 106 will be described. The cool air cooled by the cooler 111 is forcibly blown from the discharge port 124 to the upper, middle, and lower stages in the freezer compartment 106 by the cooling fan 112 that rotates as the motor rotates. The blown-out cool air is blown to the storage cases 126, 127, and 128 to cool the food stored. As shown by the arrows, the cold air that has cooled the foods is the gap between the storage case 126 and the partition wall 122 in the upper stage, the gap between the storage case 126 and the storage case 127 in the middle stage, and the storage case 127 and the storage case 128 in the lower stage. The air flows through the gap portions of the storage case 128, the air is sucked from the suction port 125 through the gap between the storage case 128 and the inner box bottom wall, and returns to the cooler 111.

  As described above, the cold air is heated by exchanging heat with the wall surface when circulating in the freezer compartment 106. In the upper stage cool air, heat exchange is performed with the metal receiving member 123. By providing the heat insulating member 130 directly below the metal receiving member 123, the heat transfer to the surface in contact with the cold air is caused by the thermal conductivity. Therefore, the temperature can be prevented from rising on the surface in contact with the cold air, and heat exchange can be suppressed. Thereby, the warming of the cold air can be suppressed, the cooling efficiency can be improved, and as a result, the power consumption can be reduced.

  In addition, since the cooling of the cold air can be suppressed, the cold air circulates at a low temperature, so that the entire temperature distribution in the freezer compartment 106 can be kept uniform.

  In addition, by providing the heat insulating member 130 directly below the metal receiving member 123, the door gasket 121 is configured in a recessed position surrounded by the inner wall of the heat insulating door 119 and the heat insulating member 130, and thus a member that extends inside and outside the warehouse. The flow of cold air to the door gasket 121 can be reduced, and heat exchange can be suppressed.

  Here, the positional relationship between the door gasket 121 and the heat insulating member 130 will be described in detail. Specifically, the door gasket 121 is disposed above the lower surface of the heat insulating member 130 (position C in FIG. 3). Thereby, the cold air in the freezer compartment 106 is less likely to flow in the direction of the door gasket 121, the flow of cold air to the door gasket 121, which is a member that extends inside and outside the warehouse, can be reduced, and heat exchange is further suppressed. it can.

Further, heat exchange between the metal receiving member 123 and cold air cools the metal receiving member 123, and it is possible to prevent the metal receiving member 123 from condensing due to a sudden temperature difference between the inside and outside than ever before.

  Next, the positional relationship between the metal receiving member 123 and the heat insulating member 130 will be described.

  The metal receiving member 123 has a lower flange 123a. Specifically, the lower flange 123a may be covered with the heat insulating member 130. More specifically, the length relationship between the length of the lower flange 123a (dimension A in FIG. 3) and the length of the heat insulating member 130 in the lateral direction (dimension B) is A <B. Thereby, the lower flange 123a which becomes high temperature is covered with the heat insulating member 130, the temperature rise of the surface in contact with the cold air can be prevented, and heat exchange can be suppressed. Thereby, the warming of the cold air can be suppressed, the cooling efficiency can be improved, and as a result, the power consumption can be reduced.

  As described above, in the present embodiment, the heat insulating box, the heat insulating door that opens and closes the front of the opening of the heat insulating box, the storage chamber formed by the heat insulating box and the heat insulating door, Cooling means for supplying cold air for cooling the storage chamber by forced convection or natural convection, a partition wall for partitioning the storage chamber and another adjacent storage chamber, and a metal receiver provided on the front surface of the partition wall A heat exchange suppressing structure for suppressing heat exchange between the cold air in the storage chamber and the metal receiving member between the metal receiving member and the storage chamber. The metal receiving member is prevented from being cooled by heat conduction from the metal, and condensation of the metal receiving member is prevented. In addition, the cold air in the storage chamber is prevented from being heated by exchanging heat with the metal receiving member, so that the cooling efficiency can be prevented from being lowered, and a refrigerator with reduced power consumption can be provided. it can.

  In the present embodiment, the heat insulating member 130 at the lower part of the metal receiving member is separated from the foam heat insulating material such as hard foam urethane filled between the inner box and the outer box of the refrigerator main body. The heat exchange with cold air can be suppressed without increasing the number of parts by integrating with the foam insulation such as hard foam urethane filled between the inner box and the outer box of the refrigerator main body. .

(Embodiment 2)
FIG. 4 is an enlarged cross-sectional view of a main part of the refrigerator in the second embodiment of the present invention.

  As shown in FIG. 4, the surface of the partition wall 122 that contacts the freezer compartment 106 is formed in a convex shape 150, and the convex shape 150 is in contact with the upper storage case 126 of the freezer compartment 106.

  Here, the structure in which the convex shape 150 and the storage case 126 are brought into contact with each other is an example of the heat exchange suppressing structure in the present invention.

  About the refrigerator comprised as mentioned above, the operation | movement / effect | action is demonstrated below. In addition, description about the operation | movement and effect | action similar to Embodiment 1 is abbreviate | omitted.

  When cold air blown out from the discharge port 124 into the freezer compartment 106 circulates, the wall surface of the partition wall 122 that contacts the freezer compartment 106 is formed in a convex shape 150 and brought into contact with the storage case 126, so that the metal receiving member 123 side The flow of cold air to the can be shielded. As a result, heat exchange between the metal receiving member 123 and the cold air can be suppressed without increasing the cost due to the addition of parts and without increasing the number of assembly steps, thereby improving the cooling efficiency and, as a result, reducing the power consumption. Can be reduced.

In addition, since the cooling of the cold air can be suppressed, the cold air circulates at a low temperature, so that the entire temperature distribution in the freezer compartment 106 can be kept uniform.

  Further, heat exchange between the metal receiving member 123 and cold air cools the metal receiving member 123, and it is possible to prevent the metal receiving member 123 from condensing due to a sudden temperature difference between the inside and outside than ever before.

  As described above, in the present embodiment, the heat exchange suppression structure is a structure in which a convex shape is formed on the lower surface of the partition wall, and the convex shape and the storage case are in contact with each other. Sealed by the convex shape provided in the partition wall and the storage case, the flow of cold air to the metal receiving member side will be reduced, and with a simple configuration, cooling of the metal receiving member and heating of the cold air in the storage chamber Therefore, it is possible to prevent the condensation of the metal receiving member, improve the cooling efficiency, and provide a refrigerator with reduced power consumption.

  Further, the convex shape 150 is integrated with the wall surface of the partition wall 122, so that it becomes very inexpensive and the number of assembly steps does not increase.

  In the present embodiment, the convex shape 150 is configured integrally with the partition wall 122, but may be configured separately.

(Embodiment 3)
FIG. 5 is an enlarged cross-sectional view of a main part of the refrigerator in the third embodiment of the present invention.

  As shown in FIG. 5, the surface of the partition wall 122 that contacts the freezer compartment 106 is formed in a convex shape 150, and the convex shape 150 and the upper storage case 126 of the freezer compartment 106 are in contact with each other.

  Further, the heat insulating member 130 provided immediately below the metal receiving member 123 is held by a resin portion that constitutes the outer periphery of the partition wall 122.

  About the refrigerator comprised as mentioned above, the operation | movement / effect | action is demonstrated below. Note that the description of the operations and actions that are the same as those in the first or second embodiment will be omitted.

  When cold air blown out from the discharge port 124 into the freezer compartment 106 circulates, the wall surface of the partition wall 122 that contacts the freezer compartment 106 is formed in a convex shape 150 and brought into contact with the storage case 126, so that the metal receiving member 123 side The flow of cold air to the can be shielded. As a result, heat exchange between the metal receiving member 123 and the cold air can be suppressed without increasing the cost due to the addition of components and without increasing the number of assembling steps, thereby improving the cooling efficiency and consequently reducing the power consumption. be able to.

  In addition, for any reason, such as deformation of the storage case 126 due to use over time, the contact of the partition wall 122 with the convex shape 150 of the wall surface in contact with the freezer compartment 106 was eliminated, and cold air leaked to the metal receiving member 123 side. Even in this case, since the heat insulating member 130 is provided directly below the metal receiving member 123, heat transfer from the metal receiving member 123 to the surface in contact with the cool air in the storage chamber passes through the heat insulating member having a low thermal conductivity. It is reduced, the temperature rise of the surface in contact with the cold air can be prevented, and heat exchange can be suppressed.

  In addition, since the cooling of the cold air can be suppressed, the cold air circulates at a low temperature, so that the entire temperature distribution in the freezer compartment 106 can be kept uniform.

Furthermore, heat exchange between the metal receiving member 123 and cold air cools the metal receiving member 123, and it is possible to prevent the metal receiving member 123 from condensing due to a sudden temperature difference between the inside and outside than ever before.

  As described above, in the present embodiment, in addition to the second embodiment, by providing a heat insulating member directly below the metal receiving member, by chance, cold air is generated on the metal receiving member side for some reason. Even in the case of leakage, heat transfer from the metal receiving member to the surface in contact with the cool air in the storage chamber is reduced through the heat insulating member with low thermal conductivity, and the temperature rise on the surface in contact with the cool air can be prevented. Exchange can be suppressed. Thereby, the cooling of the metal receiving member and the warming of the cool air in the storage chamber can be suppressed, the condensation of the metal receiving member can be prevented, the cooling efficiency can be improved, and the refrigerator with reduced power consumption can be provided.

  As described above, the refrigerator according to the present invention can be applied to a household or commercial refrigerator or a vegetable storage.

100 Refrigerator 101 Heat insulation box 106 Freezer compartment (storage compartment)
111 Cooler (cooling means)
119 Thermal insulation door 122 Partition wall 123 Metal receiving member 126, 127, 128 Storage case 130 Thermal insulation member 150 Convex shape

Claims (2)

A heat insulating box, a heat insulating door for opening and closing the front surface of the opening of the heat insulating box, a storage chamber formed by the heat insulating box and the heat insulating door, and cold air for cooling the storage chamber by forced convection or natural convection Cooling means for supplying the partition, a partition wall that partitions the other storage chamber adjacent to the storage chamber, and a metal receiving member provided on a front surface of the partition wall, the metal receiving member and the A heat exchange suppression structure that suppresses heat exchange between the cold air in the storage chamber and the metal receiving member is provided between the storage chamber, and the heat exchange suppressing structure includes the metal receiving member and the storage chamber. The heat storage member is a freezer compartment , the heat insulating member is provided directly below the metal receiving member, and the heat insulating member constitutes the outer periphery of the partition wall. It is held flush integrally with a resin portion, the gold Receiving by increasing the lateral length of the heat insulating member than the length of the lower flange member, a refrigerator in which the lower flange is covered by the heat insulating member. The refrigerator according to claim 1, further comprising a storage case that can be pulled out into the storage chamber.