JP2014070769A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which performs energy saving by a heat exchange suppression structure at an opening part of a storage room.SOLUTION: A refrigerator comprises: a partition wall for vertically partitioning a heat insulation box body into storage rooms with different temperature zones; a door arranged in front of each storage room by dividing the inside of the heat insulation box body into a plurality of storage rooms; a gasket 133 provided at the door adhered to the front surface of a frontage of an opening of the heat insulation box body; and a door frame 135 for supporting the door in an openable/closable manner. The door includes: an outer plate and an inner plate; a foam heat insulating material filled inside the outer plate and the inner plate; and a frame fixing member 136 embedded in the foam heat insulating material. The door has a frame protection member 140 provided on the storage room side, and heat exchange caused by the door frame 135 being cooled is suppressed, so that the power consumption can be reduced.

Description

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

As the demand for energy saving becomes stricter, in refrigerators that cool the storage room by forcibly circulating the cool air generated by the cooler, not only the refrigeration efficiency of the cooler but also the energy saving due to the structure of the opening of the storage room is emphasized. Has been. (For example, see Patent Document 1)
Hereinafter, a conventional refrigerator will be described with reference to the drawings.

  FIG. 7 is a sectional view of a conventional refrigerator, and FIG. 8 is a sectional view of a freezing temperature chamber of the conventional refrigerator.

  In FIG. 7, the refrigerator main body 30 includes a refrigerator compartment 36, a freezing temperature compartment 31, and a vegetable compartment 37 in order from the top. The freezing temperature chamber 31 is disposed above the second freezing chamber 32 provided with the container 42, the ice making chamber 33 juxtaposed beside the second freezing chamber 32, and below the second freezing chamber 32 and the ice making chamber 33. The first freezer compartment 34 is configured. A cooler chamber 62 having a cooler 61 is partitioned by a partition member 50 at the back of the first freezer chamber 34, and the partition member 50 is provided with a cool air passage 50 a. The freezer compartment 34 is provided with a two-tiered upper container 43 and a lower container 44, and the cold air discharge air passages 52, 53, 54 configured integrally or separately with the partition member 50 communicate with the cold air passage 50 a. Cold air is introduced into the container 42, 43, 44.

  The blower 63 is provided in the cooler chamber 62 and forcibly circulates the cold air generated in the cooler chamber 62 to the freezing temperature chamber 31, the refrigerator compartment 36, the vegetable compartment 37, and the like.

  In FIG. 8, the blower 63 generated by the cooler 61 installed on the back of the main body blows out the foods stored in the refrigerator from the discharge ports 52, 53, 54 of the partition member 50 on the back of the freezing temperature chamber 31. It is configured to cool. Then, the cold air that has cooled the foods circulates forward and returns to the cooler 61 as indicated by the arrows.

  The inner surface of the door 71 is formed of an inner plate 72, and a door gasket 73 provided over the entire periphery closely contacts the end of the door 71 to prevent the cold air from leaking to the outside. The inner plate 72 is filled with a foam heat insulating member 74 to ensure the heat insulation of the refrigerator.

  The door 71 held with the refrigerator main body 30 by the door frame 75 fixes the frame fixing member 76 embedded in the foam heat insulating member 74 and the door frame 75 holding the containers 41, 42, 43 with screws 77, It is attached so that it can operate with the refrigerator main body 30.

  In recent years, the door frame 75 has a tendency to be attached to the bottom side or the lower side of the container with the aim of maximizing the storage capacity of the container. As a result, the fixed portion of the door frame 75 to the inner plate 72 is also attached to the door 71. It is arranged below.

  The convex portion 78 of the inner plate 72 protrudes toward the storage chamber side and secures a creepage distance from the metal abutting member 79 to which the door gasket 73 is in close contact, thereby suppressing heat intrusion from the metal abutting member 79 in contact with the outside air. ing.

  Furthermore, by providing the cold air guide member 80 at the tip of the convex portion 78, in addition to further extending the creeping distance between the metal contact member 79 and the space in the storage chamber, the direction of the flow of the circulating cold air is induced. It suppresses heat intrusion.

JP 2011-080732 A

  However, in the above-described conventional configuration, the entire door frame 75 formed of a metal material is cooled by the cold air that is blown out from the discharge port 52 and circulates in the warehouse, and the metal frame fixing member 76 that is fixed by the screw 77 is also provided. Cooled at the same time. Since the cooled frame fixing member 76 is a metal material, it is easy to conduct heat, and is cooled to the front end portion 76 a of the frame fixing member 76.

  In addition, the fixing portion of the door frame 75 to the inner plate 72 is disposed below in order to maximize the storage amount of the container 41, so that the thickness of the foam heat insulating material 74 covering the distal end portion 76 a of the frame fixing member 76 is sufficient. It was difficult to ensure.

  As a result, the heat exchange with the air around the metal contact member 79 and the gasket 73 having a relatively high temperature under the influence of outside air is promoted, and the energy saving effect of the convex portion 78 of the inner plate 72 and the cold air guide member 80 seems to be considered. There was a problem that could not be put out.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a protective member that prevents cold air from directly hitting the inner plate fixing portion of the door frame, thereby cooling the inner plate fixing portion of the door frame. Accordingly, it is possible to suppress the frame fixing member from being cooled at the same time, and to suppress heat exchange with the gasket, the metal contact member, or the like from the front end of the frame fixing member.

  The refrigerator of the present invention can suppress heat exchange at the opening of a storage chamber such as a metal contact member or a gasket by suppressing the cooling of the fixed portion with the inner plate of the door frame. A refrigerator with reduced power consumption can be provided.

Front view of the refrigerator in Embodiment 1 of the present invention The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention The principal part expanded sectional view of the refrigerator in Embodiment 1 of this invention. 1 is a perspective view of an assembly front side of a frame protection member according to Embodiment 1 of the present invention. The perspective view of the assembly back side of the frame protection member in Embodiment 1 of this invention The perspective view of the refrigerator door in Embodiment 1 of this invention Basic sectional view of a conventional refrigerator Partial sectional view of a conventional refrigerator

The first invention includes an inner box, an outer box, a heat insulating box formed by a heat insulating material filled between the inner box and the outer box, a storage chamber provided in the heat insulating box, A partition wall that divides the heat insulation box into different storage chambers in different temperature zones, a door that is divided into a plurality of storage chambers inside the heat insulation box, and is arranged on the front face of the opening of the heat insulation box body In a refrigerator including a door gasket provided on the door that is in close contact and a door frame that supports the door so that the door can be opened and closed, the door includes an outer plate, an inner plate, and the outer plate and the inner plate. It is provided with a filled foam heat insulating material and a frame fixing member embedded in the foam heat insulating material, and the door is provided with a frame protection member on the storage chamber side, and heat generated by cooling the door frame. Exchange can be suppressed and power consumption can be reduced.

  According to a second invention, in the first invention, the door is provided with a cold air guide member on the storage chamber side, and the cold air circulating in the storage chamber is from the front face of the heat insulating box opening front where the temperature is relatively high. Heat exchange by guiding to a distant position can be suppressed, and power consumption can be reduced.

  According to a third invention, in the second invention, the frame protection member is formed integrally with the cold air guide member, and the connection between the parts can be eliminated and the flow of the cold air can be made smooth. Power consumption can be reduced by suppressing loss, and cost can be reduced by reducing the number of parts.

  According to a fourth invention, in any one of the first to third inventions, the frame protection member is at least one of an area of a fixing surface with an inner plate of the door frame or an inner plate contact surface of the frame fixing member. The outer projected area is larger than either area, and it suppresses cold air from cooling the fixed surface of the door frame with the inner plate and the inner plate contact surface of the frame fixing member via the inner plate. By doing so, heat exchange can be effectively suppressed and power consumption can be reduced.

  According to a fifth invention, in any one of the first to fourth inventions, the frame protection member includes a heat insulating member disposed between a fixed surface of the door frame and the inner plate, and frame protection. In addition to not being directly exposed to the door frame by the member, by improving the heat insulation inside the frame protection member, consumption is suppressed by suppressing heat exchange between the frame fixing member and the cold air via the door frame or door frame The amount of power can be reduced.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the refrigerator in the first embodiment 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. FIG. 4 is a perspective view of the assembly front side of the door frame protection member according to Embodiment 1 of the present invention. FIG. 5 is a perspective view of the assembly back side of the door frame protection member according to Embodiment 1 of the present invention. FIG. 6 is a perspective view of the refrigerator door according to Embodiment 1 of the present invention.

  In FIG. 1 and FIG. 2, a heat insulating box body 101 which is a refrigerator main body of a refrigerator 100 includes an outer box 102 mainly using a steel plate, an inner box 103 formed of a resin such as ABS, an outer box 102 and an inner box. 103 and a foam heat insulating material such as hard foam urethane filled in a space between the space 103 and the surroundings, insulated from the surroundings, and partitioned into a plurality of storage chambers. A refrigeration room 104 as a first storage room is provided at the top, and a second freezing room 105 as a fourth storage room and an ice making room 106 as a fifth storage room are provided side by side under the refrigeration room 104. The first freezing chamber 107 as the second storage chamber is disposed below the second freezing chamber 105 and the ice making chamber 106, and the vegetable chamber 108 as the third storage chamber is disposed at the bottom. ing.

The refrigerating room 104 includes a refrigerating room right door 104a and a refrigerating room left door 104b, which are rotary doors, and a refrigerating room shelf 104c and a refrigerating room case 104d are appropriately disposed therein, so that the storage space can be easily arranged. doing. On the other hand, the other storage rooms have drawer doors, the second freezer compartment door 105a has a second freezer compartment case 105b, the icemaker door 106a has an icemaker case 106b, and the first freezer compartment. The door 107a has an upper freezer case 107b and a lower freezer case 1
In 07c, the upper vegetable compartment case 108b and the lower freezer compartment case 108c are placed on the vegetable compartment door 108a on a frame attached to the door.

  The refrigerated room 104 is set to a refrigerated temperature zone which is a temperature that does not freeze for refrigerated storage, and is usually set to 1 ° C. to 5 ° C., and the vegetable room 108 has a refrigerated temperature zone equivalent to the refrigerated room 104 or slightly higher The vegetable temperature range is 2 ° C to 7 ° C. The first freezer compartment 107 is set in a freezing temperature zone, and is usually set at −22 ° C. to −15 ° C. for frozen storage, but in order to improve the frozen storage state, for example, −30 ° C. It may be set at a low temperature of -25 ° C.

  The second freezer compartment 105 is a first storage compartment having a freezing temperature range equivalent to that of the first freezer compartment 107 or a slightly higher temperature setting of −20 ° C. to −12 ° C. The ice making chamber 106 makes ice with an automatic ice maker (not shown) provided at the upper part of the room with water sent from a water storage tank (not shown) in the refrigerator compartment 104 and stores it in the ice making case 106b.

  The top surface portion of the heat insulating box 101 has a stepped recess shape toward the back of the refrigerator. A machine chamber 101a is formed in the stepped recess, and the compressor 109, moisture is formed in the machine chamber 101a. Houses high pressure side components of the refrigeration cycle such as a dryer (not shown) for removal. That is, the machine room 101 a in which the compressor 109 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 104.

  Thus, by providing the machine room 101a in the rear region of the uppermost storage room of the heat insulation box 101 that has become a dead space that is difficult to reach, the compressor 109 is disposed in the conventional refrigerator. The space in the machine room at the bottom of the easy-to-use heat insulation box 101 can be effectively converted as the storage room capacity, and the storage performance and usability can be greatly improved.

  The refrigeration cycle is formed of a series of refrigerant flow paths sequentially including a compressor 109, a condenser, a capillary as a decompressor, and a cooler 112, and a hydrocarbon-based refrigerant such as isobutane is enclosed as a refrigerant. Yes.

  The compressor 109 is a reciprocating compressor that compresses refrigerant by reciprocating a piston in a cylinder. In the case of a refrigeration cycle using a three-way valve or a switching valve for the heat insulation box 101, those functional parts may be disposed in the machine room 101a.

  In this embodiment, the decompressor constituting the refrigeration cycle is a capillary. However, an electronic expansion valve that can freely control the flow rate of the refrigerant driven by the pulse motor may be used.

  In the present embodiment, the matter relating to the main part of the invention described below is a type in which a compressor room is provided by providing a machine room in the rear region of the lowermost storage room of the heat insulating box 101, which has been generally used conventionally. It may be applied to other refrigerators.

  A cooling chamber 110 for generating cold air is provided on the back surface of the first freezing chamber 107, and the storage chamber consisting of the second freezing chamber 105, the ice making chamber 106, and the first freezing chamber 107 is separated from the cooling chamber 110. Therefore, a partition member 111 is configured. A cooler 112 is disposed in the cooling chamber 110 and exchanges heat with air warmed by exchanging heat with the storage chamber to generate cold air. The partition member 111 includes a storage chamber side partition member 111 a and a cooling chamber side partition member 111 b, and the cooling chamber side partition member 111 b includes a blower 113. The space between the storage chamber side partition member 111a and the cooling chamber side partition member 111b is an air duct 111c, and cool air forcedly sent out by the blower 113 is stored in the refrigerator compartment 104, the ice making chamber 106, and the first freezer compartment. 107, leading to the vegetable compartment 108.

  The lower space of the cooler 112 is provided with a radiant heating means 114 made of glass tube for defrosting the frost and ice adhering to the cooler 112 and its surroundings at the time of cooling. A drain pan 115 for receiving the generated defrost water, a drain tube 116 penetrating from the deepest part to the outside of the cabinet are configured, and an evaporating dish 117 is configured outside of the downstream side.

  An upper discharge port 120 is provided between a partition wall 118a that partitions the refrigerator compartment 104, the second freezing chamber 105, and the ice making chamber 106 and the storage chamber side partitioning member 111a, and the second freezing chamber 105 and the ice making chamber 106 are provided. Then, cool air is sent to the first freezer compartment 107. The cool air discharged into the storage chamber is circulated through the second freezer compartment case 105b, the ice making compartment case 106b, the upper freezer compartment case 107b, and the lower freezer compartment case 107c, and then provided below the storage compartment side partition member 111a. The returned suction port 125 is passed through and returned to the cooler 112 for circulation.

  In addition, a damper 121 is disposed on the upper partition wall 118a, and the cold air that has passed through the damper 121 is further divided into a refrigerator compartment duct 122 and a vegetable compartment duct (not shown), and the refrigerator compartment 104 is provided from the respective outlets. And sent to the vegetable compartment 108.

  3, 4, and 5, it is configured to blow out from the upper discharge port 120 of the partition member 111 on the back surface of the second freezing chamber 105 and the ice making chamber 106 and cool the stored food. ing. The cold air that has cooled the food reaches the front and circulates back to the cooler 112 as indicated by the arrows.

  The second freezer compartment door 105a is held by a door frame 135 in a heat insulating box 101 which is a refrigerator body. The second freezer compartment door 105a is filled with a foam heat insulating member 134. The heat insulating box 101 and the held door 71 fix the frame fixing member 136 embedded in the foam heat insulating member 134 and the door frame 135 holding the second freezer compartment case 105b with screws 137, It is attached so that the inside of the freezer compartment 105 can be operated back and forth.

  The door frame 135 is attached to the bottom side of the second freezer compartment case 105b in order to increase the amount of food stored in the second freezer compartment case 105b. Accordingly, the fixing portion of the door frame 135 to the inner plate 132 is It arrange | positions below with respect to the 2nd freezer compartment door 105a.

  The inner surface of the second freezer compartment door 105a on the storage chamber side is formed by the inner plate 132, and the convex portion 138 for extending the creeping distance is also formed by the inner plate 132. Further, a door gasket 133 is provided on the end of the inner plate 132 over the entire circumference, and is in close contact with the outer casing 102 and the metal contact member 139 provided on the upper partition wall 118a and the lower partition wall 118b.

  The frame protection member 140 is provided so as to cover the fixed surface of the inner plate 132 of the door frame 135. A heat insulating member 141 is provided between the frame protection member 140 and the inner plate 132 fixing surface of the door frame 135.

  The frame protection member 140 has a cold guide part 150 at its end, a fitting fixing part 151 for attachment to the door frame 135, and a screw that is a screw hole for fixing to the inner plate 132 with a screw. A fixing portion 152 is provided.

  The frame protection member 140 has an outer projected area [C] larger than the area [A] of the fixed surface with the inner plate 132 of the door frame 135 and the area [B] of the contact surface with the inner plate 132 of the frame fixing member 136. It consists of an area.

  In addition, the frame protection member 140 has a height dimension [D] in the vicinity of the lower partition wall 118b of the frame protection member 140 on the downstream side where the cold air flows. The configuration is larger than the dimension [E].

  In FIG. 6, the frame protection member 140 has a dual-purpose specification in which the same one can be attached to the second freezer compartment door 105a and the ice making compartment door 106a.

  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 second freezer compartment 105 will be described. The cold air cooled by the cooler 112 is forced to be blown from the upper discharge port 120 into the freezer compartment case 105b by the blower 113 to cool the food stored therein. Further, the cold air forcedly blown out by the blower 113 is blown out to the case in the first freezer compartment 107. The cold air that has cooled the foods joins through the gap portion between the second freezer compartment 105 and the partition wall 118, and through the gap portion between the second freezer compartment case 105b and the upper freezer compartment case 107b in the middle stage, so that the lower stage freezer The air passage is configured to be sucked from the suction port 125 through the space of the chamber case 107 c and return to the cooler 112.

  The cold air forcedly blown into the freezer compartment case 105b from the upper discharge port 120 by the blower 113 passes through the freezer compartment case 105b and travels toward the second freezer compartment door 105a.

  The frame protection member 140 attached to the door frame 135 prevents the cold air that has passed through the freezer compartment 105b and directed to the second freezer compartment door 105a from directly touching the inner plate 132 fixing surface of the door frame 135. The door frame 135 is configured to cover the entire fixed surface. The cool air hitting the frame protection member 140 flows along the surface of the frame protection member 140 and then flows toward the case in the first freezer compartment 107.

  By setting the outer projected area [C]> the fixed surface area [A] and the outer projected area [C]> the contact surface area [B], cooling to the door frame 135 and the frame protection member 140 is effectively suppressed. doing.

  The convex portion 138 of the inner plate 132 protrudes toward the storage chamber side and secures a creeping distance from the metal contact member 139 to which the door gasket 133 is in close contact, thereby suppressing heat intrusion from the metal contact member 139 in contact with the outside air. doing.

  The frame protection member 140 includes the cold air guide portion 150 on the tip end side of the convex portion 138 of the inner plate 132, thereby further extending the creeping distance between the metal contact member 139 and the space in the second freezer compartment 105. In addition, the direction of the circulating cold air can be guided in a direction away from the metal contact member 139, thereby suppressing heat intrusion.

  By setting the height dimension [D] in the vicinity of the lower partition wall 118b [D]> the upper dimension [E], the flow direction of the cold air is guided away from the metal contact member 139, and the freezer case 105b Since the inclination is in the same direction as the draft of the mold, it is easy to secure a cool air path between the frame protection member 140 and the freezer case 105b.

  A heat insulating member 141 is provided between the frame protective member 140 and the fixed surface of the inner plate 132 of the door frame 135, and the frame protective member 140 is cooled by the cool air discharged by the blower 113, thereby indirectly door frame. The power consumption is further reduced by suppressing the cooling of the fixed surface 135.

  The frame protection member 140 attached to the door frame 135 by the fitting and fixing portion 151 is a simple attachment and reduces man-hours. Further, the screw fixing portion 152 can be more firmly fixed by screw fixing when the holding strength is insufficient only by the fitting fixing portion 151. Further, the screw holes of the door frame 135 and the screw holes of the frame protection member 140 communicate with each other, and the number of parts can be reduced by using the screws 137 for fixing the door frame 135.

  Note that the screw fixing portion 152 may not be used when a sufficient holding force can be ensured with only the fitting fixing portion 151.

  The frame protection member 140 is a dual-use specification for the second freezer compartment door 105a and the ice making compartment door 106a, and enables mold cost reduction and cost reduction.

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

132 Inner plate 133 Gasket 135 Door frame 136 Frame fixing member 138 Protruding portion 139 Metal contact member 140 Frame protection member 141 Heat insulating member 150 Cold air guide portion 151 Fitting fixing portion 152 Screw fixing portion

Claims (5)

A heat insulating box formed by an inner box, an outer box, and a heat insulating material filled between the inner box and the outer box, a storage chamber provided in the heat insulating box, and the temperature of the heat insulating box Provided in the partition wall that partitions the storage chambers with different bands up and down, the door that is divided into a plurality of storage chambers in the heat insulation box and arranged in front of each storage chamber, and the door that is in close contact with the front face of the opening of the heat insulation box body A refrigerator including a door gasket and a door frame that supports the door to be opened and closed;
The door includes an outer plate and an inner plate, a foam heat insulating material filled in the outer plate and the inner plate, and a frame fixing member embedded in the foam heat insulating material,
The refrigerator is characterized in that a frame protection member is provided on the storage chamber side. The refrigerator according to claim 1, wherein the door is provided with a cold air guide member on a storage chamber side. The refrigerator according to claim 2, wherein the frame protection member is formed integrally with a cold air guide member. The frame protection member has an outer projected area larger than the area of the fixed surface with the inner plate of the door frame or the area of at least one of the inner plate contact surfaces of the frame fixing member. The refrigerator according to any one of claims 1 to 3. The refrigerator according to any one of claims 1 to 4, wherein the frame protection member is provided with a heat insulating member between a fixed surface of the door frame and the inner plate.